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Synchrotron X-ray diffraction study of the Structural Phase Transition in Ca10(Ir4As8)(Fe2-xIrxAs2)5

N. Katayama, K. Sugawara, Y. Sugiyama, T. Higuchi, K. Kudo, D. Mitsuoka, T. Mizokawa, M. Nohara, and Hiroshi Sawa

J. Phys. Soc. Jpn., 83, (2014) 113707.
High Pressure Synthesis and Structural Characterization of the Type II Clathrate Compound Na30.5Si136 Encapsulating Two Sodium Atoms in the Same Silicon Polyhedral Cages

S. Yamanaka, M. Komatsu, M. Tanaka, H. Sawa and K. Inumaru

J. Am. Chem. Soc., 136, (2014) 7717.
Observation of quadrupole helix chirality and its domain structure in DyFe3(BO3)4

T. Usui, Y. Tanaka, H. Nakajima, M. Taguchi, A. Chainani, M. Oura, S. Shin, N. Katayama, H. Sawa, Y. Wakabayashi, and T. Kimura

Nature Materials 10, (2014) 3942.
Superconductivity in Ca1-xLaxFeAs2: A Novel 112-Type Iron Pnictide with Arsenic Zigzag Bonds

N. Katayama, K. Kudo, S. Onari, T. Mizukami, K. Sugawara, Y. Sugiyama, Y. Kitahama, K. Iba, K. Fujimura, N. Nishimoto, M. Nohara, and H. Sawa

J. Phys. Soc. Jpn, 82, (2013) 123702.
Superconductivity in Ca10(Ir4As8)(Fe2As2)5 with Square-Planar Coordination of Iridium

K. Kudo, D. Mitsuoka, M. Takasuga, Y. Sugiyama, K. Sugawara, N. Katayama, H. Sawa, H. S. Kubo, K. Takamori, M. Ichioka, T. Fujii, T. Mizokawa, and M. Nohara

Scientific Reports 3, (2013) 3101-1-5.
Quantum fluctuations in spin-ice-like Pr2Zr2O7

K. Kimura, S. Nakatsuji, J-J. Wen, C. Broholm, M. B. Stone, E. Nishibori and H. Sawa

Nature Communications 4, (2013) 1934.
Room-temperature proton transport and its effect on thermopower in a solid ionic semiconductor, TTFCOONH4

Yuka Kobayashi, Takenori Fujii, Ichiro Terasaki, Hiori Kino, Yongcheng Jin, Takashi Hibino, Tetsuya Kobayashi, Eiji Nishibori, Hiroshi Sawa, Hideki Yoshikawa, Takeshi Terauchi and Satoshi Sumia

J. Mater. Chem. A 16 (2013) 5089-5096.
Structure of Tm@C82(I) Metallofullerene by Single-Crystal X-ray Diffraction Using the 1:2 Co-Crystal with Octaethylporphyrin Nickel (Ni(OEP))

Yuki Sado, Shinobu Aoyagi, Ryo Kitaura, Yasumitsu Miyata, Eiji Nishibori, Hiroshi Sawa, Kunihisa Sugimoto, and Hisanori Shinohara

J. Phys. Chem. C 117 (2013) 6437-6442.
Molecular Ionics in Supramolecular Assemblies with Channel Structures

Makoto Moriya, Hiro Kitaguchi, Eiji Nishibori, Hiroshi Sawa, Wataru Sakamoto, and Toshinobu Yogo

CHEMISTRY 18 (2012) 15305-15309.
A novel phosphor for glareless white light-emitting diodes

Daicho H, Iwasaki T, Enomoto K, Sasaki Y, Maeno Y, Shinomiya Y, Aoyagi S, Nishibori E, Sakata M, Sawa H, Matsuishi S, Hosono H.

Nature communications 3 (2012) 1132-1139.
Spin-Orbital Short-Range Order on a Honeycomb-Based Lattice

S. Nakatsuji, K. Kuga, K. Kimura, R. Satake, N. Katayama, E. Nishibori, H. Sawa, R. Ishii, M. Hagiwara, F. Bridges, T. U. Ito, W. Higemoto, Y. Karaki, M. Halim, A. A. Nugroho, J. A. Rodriguez-Rivera, M. A. Green, C. Broholm

Science 336 (2012) 559-562.
Rock-Salt-Type Crystal of Thermally Contracted C60 with Encapsulated Lithium Cation

Shinobu Aoyagi, Yuki Sado, Eiji Nishibori, Hiroshi Sawa, Hiroshi Okada, Hiromi Tobita, Yasuhiko Kasama, Ryo Kitaura, Hisanori Shinohara

Angewandte chemie 1 (2012) 3377-3381.
A Layered Ionic Crystal of Polar Li@C60 Superatoms

S. Aoyagi, E. Nishibori, H. Sawa, K. Sugimoto, M. Takata, Y. Miyata, R. Kitaura, H. Shinohara, H. Okada, T. Sakai, Y. Ono, K. Kawachi, K. Yokoo, S. Ono, K. Omote, Y. Kasama, S. Ishikawa, T. Komuro, H. Tobita

Nature Chem. 2 (2010) 678-683.
Nitrated Benzyne Derivatives of La@C82 : Addition of NO2 and Its Positional Directing Effect on the Subsequent Addition of Benzynes

X. Lu, H. Nikawa, T. Tsuchiya, T. Akasaka, M. Toki, H. Sawa, N. Mizorogi, and S. Nagase

Angew. Chem. Int. Ed. 49 (2010) 594-597.
Rotational Sublevels of an Ortho-Hydrogen Molecule Encapsulated in an Isotropic C60 Cage

Y. Kohama, T. Rachi, J. Jing, Z. Li, J. Tang, R. Kumashiro, S. Izumisawa, H. Kawaji, T. Atake, H. Sawa, Y. Murata, K. Komatsu, and K. Tanigaki

Phys. Rev. Lett.103 (2009) 073001(4pp)
Organic Superconductivity Enhanced by Asymmetric-Anion Random Potential in (MDT-TS)I0.85Br0.41 [MDT-TS = 5H-2-(1,3-diselenole-2-ylidene)-1,3,4,6-tetrathiapentalene]

Y. Bando, T. Kawamoto, T. Mori, T. Kakiuchi, H. Sawa, K. Takimiya, and T. Otsubo

Chem. Mater.21 (2009) 3521-3525
Size of orbital-ordering domain controlled by the itinerancy of the 3d electrons in a manganite thin film

Y. Wakabayashi, H. Sagayama, T. Arima, M. Nakamura, Y. Ogimoto, Y. Kubo, K. Miyano, and H. Sawa

Phys. Rev. B79 (2009) 220403(4pp)
Structural study on Pr0.55(Ca1-ySry)0.45MnO3 thin films on perovskite (011) substrate

Y. Wakabayashi, N. Takubo, K. Miyano, and H. Sawa

Eur. Phys. J. Special Topics167 (2009) 67-71
Crystal Structure and Valence Distribution of [(LaMnO3)m(SrMnO3)m]n Artificial Superlattices

H. Nakao, J. Nishimura, Y. Murakami, A. Ohtomo, T. Fukumura, M. Kawasaki, T. Koida, Y. Wakabayashi, and H. Sawa

J. Phys. Soc. Jpn.78 (2009) 024602
A gradational system for ferroelectric nanosized (Pb0.7Sr0.3)TiO3 particles

F. Shikanai, J. Kano, H. Sawa, F. Zhang, T. Karaki, M. Adachi, J-G. Park, S. Kojima, S. Ikeda, and T. Kamiyama

J. Phys. Condens. Matter21 (2009) 025903
Chemical Understanding of a Non-IPR Metallofullerene: Stabilization of Encaged Metals on Fused-Pentagon Bonds in La2@C72

X. Lu, H. Nikawa, T. Nakahodo, T. Tsuchiya, M. O. Ishitsuka, Y. Maeda, T. Akasaka, M. Toki, H. Sawa, Z. Slanina, N. Mizorogi, and S. Nagase

J. Am. Chem. Soc.130 (2008) 9129-9136
Bis-Carbene Adducts of Non-IPR La2@C72 : Localization of High Reactivity around Fused Pentagons and Electrochemical Properties

Xing Lu, Hidefumi Nikawa, Takahiro Tsuchiya, Yutaka Maeda, Midori O. Ishitsuka,Takeshi Akasaka,* Makoto Toki, Hiroshi Sawa, Zdenek Slanina, Naomi Mizorogi, and Shigeru Nagase

Angew. Chem. Int. Ed.47 (2008) 8642-8645
Orbital Ordering Structures in (Nd,Pr)0.5Sr0.5MnO3 Manganite Thin Films on Perovskite (011) Substrates

Yusuke Wakabayashi, Daisuke Bizen, Yugo Kubo, Hironori Nakao, Youichi Murakami, Masao Nakamura, Yasushi Ogimoto, Kenjiro Miyano, and Hiroshi Sawa

J.Phys.Soc.Jpn.77(1) (2008) 014712-1-014712-7

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Addition of Adamantilidene to La2@C78: Isolation and Single-Crystal X-ray Structural Determination of the Monoadducts

B. Cao, H. Nikawa, T. Nakahodo, T. Tsuchiya, Y. Maeda, T. Akasaka, H. Sawa, Z. Slanina, N. Mizorogi, and S. Nagase

J. Am. Chem. Soc.130 (2008) 983-989
X-ray Diffraction Study on Charge and Orbital Order in Pr0.65Ca0.35MnO3 under High Pressure

Susumu Shimomura, Kazutoshi Torashima, Nobuyoshi Wakabayashi, Kengo Nishimoto, Takashi Tonegawa, Nozomu Hamaya, Hiroshi Sawa, Yasuhide Tomioka, and Yoshinori Tokura

J.Phys. Soc.Jpn.76 (12) (2007) 124603-1-12463-6
Charge ordering in α-(BEDT-TTF)2I3 by synchrotron X-ray diffraction

T.Kakiuchi1, Y.Wakabayashi,H. Sawa, T.Takahashi, T.Nakamura

J.Phys.Soc.Jpn.76(11) (2007) 113702
Superconductivity of doped Ar@C60

K.Yakigaya, A.Takeda,Y.Yokoyama, S.Ito, T.Miyazaki,T.Suetsuna, H.Shimotani, T.Kakiuchi, H.Sawa, H.Takagi, K.Kitagawa, N.Dragoe

New Journal of Chemistry 31 (2007) 973-979
Domain formation in the structural phase transition of the organic superconductor kL-(DMEDO-TSeF)2[Au(CN)4](THF)

T.Kawamoto, T. Mori, T.Kakiuchi, H. Sawa, T.Shirahata, M.Kibune, H.Yoshino, T. Imakubo ,

Phys.Rev.B 76 (2007) 134517
Manganese (III, IV) and Manganese (III) Oxide Clusters Trapped by Copper (II) Complexes

S. Yamashita, T .Shiga, M. Kurashima, M. Nihei, H. Nojiri, H. Sawa, T. Kakiuchi, H. Oshio

Inorganic Chemistry 46(10) (2007) 3810-3812
Relation between superconductivity and superstructure in Ce2RhIn8

Masahito Koeda, Tetsuya Fujiwara, Masato Hedo, Yoshiya Uwatoko, Hajime Sagayama, Yusuke Wakabayashi and Hiroshi Sawa,

Journal of Magnetism and Magnetic Materials Vol.310, Issue 2, Part 1 (2007) e31-e32
Wigner Crystallization in (DI-DCNQI)2Ag Detected by Synchrotron Radiation X-Ray Diffraction

T. Kakiuchi,Y. Wakabayashi, H. Sawa, T. Itou, K. Kanoda

Phys Rev. Lett.98 (2007) 066402-1-066402-4
Pressure-Induced Metal-Semiconductor-Metal Transitions in an MMX-Chain Complex, Pt2(C2H5CS2)4I

A. Kobayashi, A. Tokunaga, R. Ikeda, H. Sagayama, Y. Wakabayashi, H. Sawa, M. Hedo, Y. Uwatoko, and H. Kitagawa

European Journal of Inorganic Chemistry (2006) 3567-3570
Checkerboard-type charge-ordered state of a pressure-induced superconductor, β-(meso-DMBEDT-TTF)2PF6.,

S. Kimura, H. Suzuki, T. Maejima, H. Mori, J.-I. Yamaura, T. Kakiuchi, H. Sawa, H. Moriyama.,

J. Am. Chem. Soc.128 (2006) 1456-1457
Halogen-Bridged PtII/PtIV Mixed-Valence Ladder Compounds

D. Kawakami, M. Yamashita,* S. Matsunaga, S. Takeishi, T. Kajiwara, H. Miyasaka, K. Sugiura, H. Matsuzaki, H. Okamoto, Y. Wakabayashi, H. Sawa

Angewandte Chemie Int. Ed.45 (2006) 7214-7217

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Correlation between crystal structures of CaAlSi with and without superlattice and superconduction properties

S. Kuroiwa, H. Sagayama, T. Kakiuchi, H. Sawa, Y. Noda, and J. Akimitsu

Phys. Rev. B 74 (2006) 014517-1-014517-5
Superconductivity of doped Ar@C60

A. Takeda, Y. Yokoyama, S. Ito, T. Miyazaki, H. Shimotani, K. Yakigaya, T. Kakiuchi, H. Sawa, H. Takagi, K. Kitazawa and N. Dragoe

Chem. Commun. 8 (2006) 912-914
Current-Induced metallic State in an Organic (EDT-TSF)2GaCl4 Conductor

Hisataka Endo, Tadashi Kawamoto, Takehiko Mori, Ichiro Terasaki, Toru Kakiuchi, Hiroshi Sawa, Mie Kodani, Kazuo Takimiya, and Tetsuo Otsubo

J. Am. Chem. Soc.128 (2006) 9006-9007
Most Stable Metallic Phase of the Mixed-Valence MMX-Chain,Pt2(dtp)4I(dtp:C2H5CS2-),in Purely d-Electronic Conductors Based on the Transition-Metal Complex

K.Otsubo, A.Kobayashi, H.Kitagawa, M.Hedo, Y.Uwatoko, H.Sagayama, Y.Wakabayashi and H.Sawa

J. Am. Chem. Soc.128(25) (2006) 8140-8141
Direct Determination of Low-Dimensional Structures: Synchrotron X-ray Scattering on One-Dimensional Charge-Ordered MMX-Chain Complexes

Y. Wakabayashi, A. Kobayashi, H. Sawa, H. Ohsumi, N. Ikeda, and H. Kitagawa

J. Am. Chem. Soc.128(20) (2006) 6676-6682
Dynamical Valence Fluctuation at the Charge-Density-Wave Phase Boundary in Iodide-Bridged Pt Compound [Pt(chxn)2I]I2

S.Takaishi, D.Kawakami, M.Yamashita, M.Sasaki, T.Kajiwara, H.Miyasaka, K.Sugiura, Y.Wakabayashi, H.Sawa, H.Matsuzaki, H.Kishida, H.Okamoto, H.Watanabe, H.Tanaka, K.Marumoto, H.Ito, and S.Kuroda

J. Am. Chem. Soc.128(19) (2006) 6420-6425
Floating Single Hydrogen Molecule in an Open-Cage Fullerene

H. Sawa, Y. Wakabayashi, Y. Murata, M. Murata, and K. Komatsu

Angewandte Chemie 44 (2005) 1981-1983
Periodic Arrangement of Quadrupolar Moments Induced by the Antiferromagnetic Order in TbB2C2: Observation by Resonant X-ray Scattering

D. Okuyama, T. Matsumura, H. Nakao, Y. Murakami, H. Onodera, A. Tobo, Y. Wakabayashi and H. Sawa

J. Phys. Soc. Jpn.74 (2005) 1566-1571
Resonant x-ray scattering on antiferroquadrupolar ordering compound Dy0.8Gd0.2B2C2

M. Sakata, A. Tobo, T. Matsumura, D. Okuyama, Y. Murakami, Y. Wakabayashi, H. Sawa, K. Ohoyama and H. Onodera

Physica B 359-361 (2005) 950-952
Charge-Order Pattern of the Low-Temperature Phase from a Monoclinic Single Domain of NaV0 Uniquely Determined by Resonant X-ray Scattering25

K. Ohwada, Y. Fujii, Y. Katsuki, J. Muraoka, H. Nakao, Y. Murakami, H. Sawa, Y. Ueda

Phys.Rev.Lett. 94 (2005) 106401-1-106401-4

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Clamp-Type Pressure Cell for Full Strcture Determination of Molecular Single Crystals up to 1.5 GPa

T.Hasegawa, R.Kumai, Y.Takahashi, Y.Tokura and H.Sawa

Rev.Sci.Instrum.76 (2005) 073903
Resonant Magnetic X-ray Scattering from Antiferromagnetic Order in GdAs

D. Okuyama , T. Matsumura , Y. Murakami , Y. Wakabayashi , H. Sawa and D. X. Li

Physica B 345 (2004) 63-65
Lack of Influence of Anisotropic Electron Clouds on Resonant X-ray Scattering from Manganite Thin Films

Y. Wakabayashi, H. Sawa, M. Nakamura, M. Izumi, and K. Miyano

Phys. Rev. B 69 (2004) 144414
A Thirty-Year Perspective on Science-A Role of Synchrotron Radiation

M.Takata, S.Wakatsuki, K.Ono, K.Harada, K.Hirano, H.Sawa and Y.Kitajima etc.

Houshakou.17 (2004) 257
Deuterium Freedom and M- I Transition in (DMe-DCNQI)2Cu System

Y. Nishio, S. Sasaki, Y. Mori, K. Kajita, S. Aonuma, H. Sawa, M. Tamura and R. Kato

Synth. Met. 133-134 (2003) 569-571
Crystal Design of Organic Conductors Using the Iodine Bond

Tatsuro Imakubo, Naoya Tajima, Takashi Shirahata, Atsushi Miyake, Hiroshi Sawa, Toshikazu Nakamura, Hitoshi Ohnuki, Masafumi Tamura, Reizo Kato, Mitsuru Izumi, Yutaka Nishio and Koji Kajita

Synth. Met. 135-136 (2003) 601-602
Magnetic Properties and Structures of the α- and δ-Phases of p-NPNN

Masafumi Tamura, Yuko Hosokoshi, Daisuke Shiomi, Minoru Kinoshita, Yasuhiro Nakasawa, Masayasu Ishikawa, Hiroshi Sawa, Takafumi Kitazawa, Atsushi Eguchi, Yutaka Nishio and Koji Kajita

J. Phys. Soc. Jpn.72 (2003) 1735-1744
Observation of Lattice Dimerization in Spin-singlet Low Temperature Phase of NaTiSi2O6

E. Ninomiya, M. Isobe, Y. Ueda, M. Nishi, K. Ohoyama, H. Sawa and T. Ohama

Physica B 329-333 (2003) 884-885
Low-temperature Zigzag Charge-ordering Structure of α'-NaV2O5

H. Sawa, Y. Wakabayashi, E. Ninomiya, T. Ohama, H. Nakao, Y. Murakami, K. Ohwada, Y. Fujii, Y. Noda, M. Isobe and Y. Ueda

Physica B 329-333 (2003) 878-879
Resonant X-ray Scattering Study on the Filled Skutterudite PrFe4P12

K. Ishii, T. Inami, Y. Murakami, L. Hao, K. Iwasa, M. Kohgi, Y. Aoki, H. Sugawara, H. Sato, S. Imada, H. Nakao, H. Sawa and Y. Wakabayashi

Physica B 329-333 (2003) 467-468

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Charge and Orbital Ordered States in Nd1-xSr1+xMnO4 (x=0.67, 0.75)

Hironori Nakao, Tadashi Satoh, Junko Satoh, Youichi Murakami, Masato Kubota, Yusuke Wakabayashi, Hiroshi Sawa, Tsuyoshi Kimura and Yoshinori Tokura

Physica B 329-333 (2003) 809-810
Schottky Specific Heat due to the Tunneling Rotation of Methyl Groups in Deuterated (DMe-DCNQI)2Cu System

Yutaka Nishio, Yuko Mori, Sachie Sasaki, Koji Kajita, Shuji Aonuma, Hiroshi Sawa, Masafumi Tamura and Reizo Kato

J. Phys. Soc. Jpn.71 (2002) 1701-1704
An Application of Supramolecular Chemistry to Molecular Conductors

R.Kato, T.Imakubo, H.Yamamoto, R.Maeda, M.Fujiwara, J.Yamaura H.Sawa

Mol. Cryst. Liq. Cryst. 380 (2002) 61-68
Low-Temperature Structure of the Quarter-Filled Ladder Compound α・-NaV2O5

Hiroshi Sawa, Emi Ninomiya, Tetsuo Ohama, Hironori Nakao, Kenji Ohwada, Youichi Murakami, Yasuhiko Fujii, Yukio Noda, Masahiko Isobe and Yutaka Ueda

J. Phys. Soc. Jpn.71 (2002) 385-388
Zigzag Charge Ordering Structure of the Quarter-filled Ladder Compound NaV2O5

H. Sawa, E. Ninomiya, T. Ohama, H. Nakao, K. Ohwada, Y. Murakami, Y. Fujii, Y. Noda, M. Isobe and Y. Ueda

Acta Cryst. A 58 (2002) Suppl.C340
Synchrotron X-Ray and Neutron Scattering Study on the Spin-Charge-Lattice Coupled System of NaV2O5

Y.Fuji, K.Ohwada, Y.Katsuki, N.Takesue, T.Yoshihama, K.Nakajima, N.Aso, M.Nishi, K.Kakurai, M.Isobe, Y.Ueda, H.Nakao, Y.Murakami, E.Ninomiya, H.Sawa, and Y.Noda

Solid State Physics. 37 (2002) 627
Invitation to Experiments of Structural Materials Science using Synchrotron X-rays

S.Shimomura, J.Mizuki, H.Sawa and Y.Murakami

Solid State Phys. 37 (2002) 711
Anomalous Specific Heat of (DMe-DCNQI d2[1,1;0]1-xd4[2,2;0]x)2Cu-System

Y. Nishio, S. Sasaki, M. Tamura, K. Kajita, S. Aonuma, H. Sawa and R. Kato

Synth. Met. 120 (2001) 1047-1048
(ET)3(MnCl4)(1,1,2････C2H3Cl3) (ET = bis(ethylenedithio)tetrathiafulvalene); a Pressure･･･Sensitive New Molecular Conductor with Localized Spins

Toshio Naito , Tamotsu Inabe , Keiji Takeda , Kunio Awaga , Tomoyuki Akutagawa , Tatsuo Hasegawa , Takayoshi Nakamura , Toru Kakiuchi , Hiroshi Sawa , Takashi Yamamoto and Hiroyuki Tajima

J. Mater.Chem. 11 (2001) 2221 - 2227
Peculiar Physical Properties of (ET)3(MnCl4)(TCE)

T. Naito, T. Inabe, K. Takeda, K. Awaga, T. Akutagawa, T. Hasegawa, T. Nakamura, T. Kakiuchi, H. Sawa, T. Yamamoto and H. Tajima

Synth. Met. 120 (2001) 877-878

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Synthesis and Physical Properties of (DIETS)2[Au(CN)4]: A New θ-salt with a Unique Donor・・・Anion Network

T. Imakubo, A. Miyake, H. Sawa and R. Kato

Synth. Met. 120 (2001) 927-928
XANES Study of Charge Ordering on the Spin-Peierls Phase Transition of α '-NaV2O5

T. Shobu, Y. Noda, E. Ninomiya, H. Sawa, S. Nagamatsu, T. Fujikawa, Y. Ueda, M. Isobe, N. Ikeda and T. Uruga

J. Synchrotron Rad. 8 (2001) 746-748
Thermodynamical Study of (DMe-DCNQI)2Cu System-Mechanism of Reentrant Metal-Insulator Transition

Y.Nishio, M.Tamura, K.Kajita, S.Aonuma, H.Sawa, R.Kato, and H Kobayashi

J. Phis. Soc. Jpn.69 (2000) 1414-1422
Zigzag Charge Ordering in α -NaV2O5

Tetsuo Ohama, Atsushi Goto, Tadashi Shimizu, Emi Ninomiya, Hiroshi Sawa, Masahiko Isobe and Yutaka Ueda

J. Phys. Soc. Jpn.69 (2000) 2751-2754
Impurity Effect on the Spin-Peierls State of (DMe-DCNQI)2CuxLi1-x

M. Yamane, T. Nakamura, T. Takahashi, S. Aonuma, R. Kato and H. Sawa

Synth. Met. 103 (1999) 2196
Hybrid-Dimensional System in M(dmit)2 Salts

N.Hanasaki, H.Tajima, R.Kato, T.Imakubo, and H.Sawa

Synth. Met. 103 (1999) 2086
Low Temperature X-ray Studies of β・-Pd(dmit)2 Salts

R. Kato, S. Aonuma, H. Sawa and S. RouziEre

Synth. Met. 103 (1999) 1942-1943
Physical Properties and Crystal Structure at Low Temperature of the Molecular Conductor(DMe-DCNQI)2 Cu System

H.Sawa

J.Cryst.Soc.Jpn.41 (1999) 175
A Tailor-made Hexagonal System in a Molecular Conductor

T.Imakubo, T.Maruyama, H.Sawa, and K,Kobayashi

Chem. Commun. 18 (1998) 2021-2022
Lattice Dimerization and Strain in Inoganic Spin-Pierls Compound NaV2O5

H.Nakao, K.Ohwada, N.Takesue, Y.Fujii, M.Isobe, Y.Ueda, H.Sawa, H.Kawada, Y.Murakami, W.I.F.David and R.M.Ibberson

Physica B 241 (1998) 534

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New Inorganic Spin-Peierls Compound NaV2O5 Evidenced by X-Ray and Neutron Scattering

Y.Fujii, H.Nakao, T.Yoshihama, M.Nishi, K.Nakajima, K.Kakurai, M.Isobe, Y.Ueda and H.Sawa

J. Phys. Soc. Jpn.66 (1997) 326-329
13C- NMR Studies of the Metalic State of (DCNQI)2Cu

K.Katagawa, N.maruyama, T.Nakamura, T.Takahashi, Y.Kashimura, S.Aonuma, H.Sawa

Synth. Met. 86 (1997) 1915-1916
1H-NMR1- Studies of (DMe-DCNQI-d7)2Cu1-xLix

N.Maruyama, T.Nakamura, T.Takahashi, S.Aonuma, H.Sawa and R.Kato

Synth. Met. 86 (1997) 2093-2094
Observation of the Order of Cu Ions in the Mixed-valence State of (DMe-DCNQI)2Cu by Raman Scattering

T.Sekine, T.Kamioka, R.Kawano, K.Tsutsumi, Y.Tanokura, S.Aonuma, H.Sawa, R.Kato

Synth. Met. 86 (1997) 2071-2072
Novel Electronic States in the (DCNQI)2Cu System

H.Sawa, S.Aonuma, Y.Kashimura,and R.Kato

Synth. Met. 86 (1997) 2091-2092
Infrared Reflectance Spectra of DCNQI Salts

H.Tajima, S.Aonuma, H.Sawa, R.Kato

Synth. Met. 86 (1997) 2101-2102
Thermal Study of Reentrant Metal-insulator Transition in Deuterated (DMe-DCQNI)2Cu

N. Someya, Y. Nishio, M. Tamura, K. Kajita, S. Aonuma, H. Sawa, R. Kato and H. Kobayashi

Synth. Met. 86 (1997) 2077-2078
Cyclotron Resonance Studies of the Molecular Conductor d2[1,1;0]-(DMe-DCNQI)2Cu

S. Hill, P. S. Sandhu, S. Uji, J. S. Brooks, M. Boonman, J. A. A. J. Perenboom, A. Wittlin, R. Kato, H. Sawa and S. Aonuma

Synth. Met. 86 (1997) 2113-2114
Thermal Study of Antiferromagnetic Ordering in Deuterated (DMe-DCNQI)2Cu

Y. Nishio, T. Tega, M. Tamura, K. Kajita, S. Aonuma, H. Sawa, R. Kato and H. Kobayashi

Synth. Met. 85 (1997) 1739-1740
Magnetic Properties of DCNQI Salts Studied Using μSR

F. L. Pratt, P. A. Pattenden, S. J. Blundell, K. H. Chow, Th. Jestadt, W. Hayes, R. Kato, M. Tamura, H. Sawa and Y. Kashimura

Synth. Met. 85 (1997) 1747-1748

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A New Ambient-Pressure Organic Superconductor (TMET-STF)2BF4 [TMET-STF =trimethylene (ethylenedithio)diselenadithiafulvalene]

Reizo Kato , Ken Yamamoto , Yoshinori Okano , Hiroyuki Tajima and Hiroshi Sawa

J. Chem.Soc.Chem.Commun. 10 (1997) 947-948
Molecular Conductors based on Pd(dmit)2 and related metal dithiolene complexes - AUnique Two-band System --

R.Kato, Y-L.Liu, S.Aonuma and H.Sawa

Synth. Met. 86 (1997) 2087-2088
Se-Substitution and Cation Effects on the High-Pressure Molecular Superconductor, β-Me4N[Pd(dmit)2]2 - A Unique Two-band System -

R.Kato, Y-L.Liu, Y.Hosokoshi, S.Aonuma and H.Sawa

Mol. Cryst. Liq. Cryst. 296 (1997) 217-244
Phase Transition and Magnetoresistance in a Quasi-one-dimensional Conductor (TMET-STF)2Au(CN)2

S.Uji, T.Terashima, H.Aoki, S.Valfells, J.S.Brooks, K.Yamamoto, Y.Okano,H.Sawa,and R.Kato

Synth. Met. 86 (1997) 2035-2036
Synthesis, Structure, and Electro Properties of New “Unsymmetrical” Metal Dithiolate Complexes

Reizo Kato, Yoshiaki Kashimura, Hiroshi Sawa and Yoshinori Okano

Chem. Lett. 26 (1997) 921-922
Preparation, Structure and Conductivity of ET2Me2Z(Z=P,As,Sb) Salts of M(dmit)2 and M(dmise)2 (M=Ni,Pd)

Shuji Aonuma, Hiroshi Sawa and Reizo Kato

Synth. Met. 86 (1997) 1881-1882
NMR Invitation of the Insulating State in(CH3)4P[Pd(dmise)2]2

Y.Tsuchiya, T.Nakamura, T.Takahashi, Y.-L, H.Sawa and R.Kato

Synth. Met. 86 (1997) 2117-2118
Syntheses, Structures and Electrical Properties of Cation Radical Salts Based on TTF Derivatives Containing O,S and Se

Y.Okano, K.Yamamoto, T.Imakubo, H.Sawa, and R.Kato

Synth. Met. 86 (1997) 1829-1830
Crystal Engineering in Molecular Conductors Based on Iodine-bonded π-donors

T. Imakubo, R. Kato and H. Sawa

Synth. Met. 86 (1997) 1847-1848
Synthesis and Properties of Novel Iodine-bonded π-donors Containing Selenium Atoms, Oxygen Atoms or Extended _-system

T. Imakubo, H. Sawa and R. Kato

Synth. Met. 86 (1997) 1883-1884

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Phase Transtion and Magnetoresistance in a Quasi-one-dimensional Conductor (TMET-STF)2Au(CN)2

T. Terashima, S. Valfells, J. S. Brooks, S. Uji, R. Kato, H. Sawa, Y. Okano, K. Yamamoto and H. Aoki

Synth. Met. 86 (1997) 2035-2036
Novel Organic Conductors Containing Lanthanide Element in Counter Anion

T. Imakubo, H. Tajima, R. Kato and H. Sawa

Synth. Met. 86 (1997) 2047-2048
Isolation of Crystals of a Planar Nitronyl Nitroxide Radical:2-phenylbenzimidazol-1-yl N,N'-dioxide(PBIDO)

Y.Kusaba, M.Tamura, Y.Hosokoshi, M.KInoshita, H.Sawa, R.Kato and H.Kobayashi

J. Mater. Chem.7 (1997) 1377-1382
Low Temperature Spin State of a Model Compound for Organic Ferrimagnets as Studied by Single Crystal Cw-ESR Spectroscopy

M. Nishizawa, D. Shiomi, K. Itoh, K. Sato, T. Takui, H. Sakurai, A. Izuoka, T. Sugawara, H. Sawa and R. Kato

Synth. Met. 85 (1997) 1727-1728
New Inorganic Spin-Peierls Compound NaV2O5 Evidenced by X-Ray and Neutron Scattering

Yasuhiko Fujii, Hironori Nakao, Tomoyuki Yosihama, Masakazu Nishi, Kenji Nakajima, Kazuhisa Kakurai, Masahiko Isobe, Yutaka Ueda and Hiroshi Sawa

J. Phys. Soc. Jpn.66 (1997) 326-329
Lattice Dimerization and Strain in Inorganic Spin-Peierls Compound NaV2O5

H. Nakao, K. Ohwada, N. Takesue, Y. Fujii, M. Isobe, Y. Ueda, H. Sawa, H. Kawada, Y.Murakami, W. I. F. David and R. M. Ibberson

Physica B 241-243 (1997) 534-536
Crystal Growth of YbTX (T=Cu, Ag, Pt, Au; X=Sn, Sb) and the Magnetic and Transport Properties

K.Katoh, T.Takabatake, A.Minami, I.Oguro, H.Sawa

J. Alloys and Compounds 261 (1997) 32-36
Magnetoelectrodynamics of a Three-dimensional Organic Conductor: Observation of Cyclotron Resonance in d2[1,1;0]-(DMe-DCNQI)2Cu

S. Hill, P. S. Sandhu, M. E. J. Boonman, J. A. A. J. Perenboom, A. Wittlin, S. Uji, J. S. Brooks, R. Kato, H. Sawa, and S. Aonuma

Phys. Rev. B 54 (1996) 13536-13541
Chemical Control of the Electronic States in the π-d System

R.Kato, S. Aonuma, and H. Sawa

Mol. Cryst. Liq. Cryst. 284 (1996) 183-194
pπ-d Interaction in the (R1,R2-DCNQI)2Cu System

R.Kato, Y.Kashimura, S. Aonuma, H. Sawa, H.Takahashi and N.Mori

Mol. Cryst. Liq. Cryst. 285 (1996) 143-150

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Anormalous 13C/15N Isotope Effect in the π-d System (DMe-DCNQI)2Cu Studied by Selective Isotoope Substitution

S.Aonuma, H.Sawa and R.Kato

Mol. Cryst. Liq. Cryst. 285 (1996) 163-168
Correlation between the Thermal and Magnetic Properties of (DCNQI)2Cu

M. Tamura, N.Someya, Y.Nishio, K.Kajita, Y.Kashimura, S.Aonuma, H.Sawa and R.Kato

Mol. Cryst. Liq. Cryst.285 (1996) 151-156
Raman Scattering in Organic Conductors(DMe-DCNQI)2Cu

T.Sekine, K.Tsutsumi, Y.Tanokura, S.Aonuma, H.Sawa, R.Kato

Physica B 219-220 (1996) 532-534
High-Resolution Photoemission and X-ray Absorption Study of Quasi-one-dimensional DCNQI-Cu Salt

A. Sekiyama, A. Fujimori, S. Aonuma, H. Sawa and R. Kato

Journal of Electron Spectroscopy and Related Phenomena 78 (1996) 473-476
New Molecular Conductors Containing Magnetic Tetrahedral Anion, (DIETS)2FeX4 and (DIETS)FeX4 : [DIETS=diiodo-ethylenedithiodithiadiselenafulvalene, X=Cl, Br]

T.Imakubo, H.Sawa and R.Kato

Mol. Cryst. Liq. Cryst. 285 (1996) 27-32
Novel Pressure-Temperature Phase Diagram of Molecular Conductors Related to the High-Pressure Superconductor, β-Me4N[Pd(dmit)2]2

H.Sawa, Y-L.Liu, S.Aonuma and R.Kato

Mol. Cryst. Liq. Cryst. 285 (1996) 131-136
Cation Size Effect in Molecular Conductors Related to the High-Pressure Superconductor β-Me4N[Pd(dmit)2]2 (dmit = 2-thioxo-1,3-dithiole-4,5-dithiolate)

Reizo Kato, You-Liang Liu, Shuji Aonuma and Hiroshi Sawa

Solid State Commun. 98 (1996) 1021-1025
Unexpected Isotope Effect in 13C-substituted (-C≡N) Molecular Conductor (DMe-DCNQI)2Cu (DMe-DCNQI=2,5-dimethyl-N,N'-dicyanoquinonediimine)

R.Kato, S.Aonuma, H.Sawa, K.Hiraki and T.Takahashi

Synth. Met. 68 (1995) 195-198
Fermi Surface and Absence of Additional Mass Enhancement near the Insulating Phase in (DMe-DCNQI)2 Cu

S.Uji, T.Terashima, H.Aoki, R.Kato, H.Sawa, S.Aonuma, M.Tamura and M.Kinoshita

Solid State Commun. 93 (1995) 203-207
(DCNQI)2Cu: Variety of Magnetism Arising from p_-d Interactions

M.Tamura, H.Sawa, Y.Kashimura, S.Aonuma, R.Kato and M.Kinoshita

Mol. Cryst. Liq. Cryst. 271 (1995) 13-18

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Enhanced Magnetic Susceptibility of (DI-DCNQI)2Cu

M.Tamura, Y.Kashimura, H.Sawa, S.Aonuma, R.Kato and M.Kinoshita

Solid State. Commun. 93 (1995) 585-588
Chemical Pressure Effect by Selective Deuteration in Molecular-Based Conductor, 2.5-dimethyI-N,N’- dicyano-p-benzoquinone Imminecopper Salt, (DMe-DCNQI)2Cu

S.Aonuma, H.Sawa and R.Kato

J. Chem. Soc. Perkin Trans.2 (1995) 1541-1549
Anomalous Pressure-Temperature Phase Diagram of the Molecular Conductor, (DI-DCNQI)2Cu (DI-DCNQI=2,5-Diiodo-N,N'-dicyanoquinonediimine)

Yoshiaki Kashimura, Hiroshi Sawa, Shuji Aonuma, Reizo Kato, Hiroki Takahashi and Nobuo Mori

Solid State Commun. 93 (1995) 675-679
Magnetic Structure in the Antiferromagnetic State of the Organic Conductor, (DMe-DCNQI[3,3:1]d7)2Cu: 1H-NMR Analysis

Ko-ichi Hiraki, Yoshiaki Kobayashi, Toshikazu Nakamura, Toshihiro Takahashi, Shuji Aonuma, Hiroshi Sawa, Reizo Kato and Hayao Kobayashi

J. Phys. Soc. Jpn.64 (1995) 2203-2211
Infrared Reflectance Spectra of (Me2DCNQI-d7)2Cu

Hiroyuki Tajima, Shuuji Aonuma, Hiroshi Sawa and Reizo Kato

J. Phys. Soc. Jpn.64 (1995) 2502-2509
Fermi-liquid Versus Luttinger-liquid Behavior and Metal-insulator Transition in N,N'- dicyanoquinonediimine-Cu Salt Studied by Photoemission

A. Sekiyama, A. Fujimori, S. Aonuma, H. Sawa, and R. Kato

Phys. Rev. B 51 (1995) 13899-13902
Giant Peak in the Specific Heat of Selectively Deuterated (DMe-DCNQI)2Cu

Y. Nishio, N. Someya, T. Tega, H. Kobayashi, K. Kajita, S. Aonuma, H. Sawa and R. Kato

Synth. Met. 71 (1995) 1947-1948
Structures and Properties of New Molecular Conductors Based on Pd(dmise)2 (dmise = 2-selenoxo-1,3-dithiole-4,5-dithiolate)

Reizo Kato, You-Liang Liu, Hiroshi Sawa, Shuji Aonuma, Atsushi Ichikawa, Hiroki Takahashi and Nobuo Mori

Solid State. Commun. 94 (1995) 973-977
Novel Radical Cation Salts of Organic _-donors Containing Iodine Atom(s): The First Application of Strong Intermolecular -I…X- (X=CN, Halogen Atom) Interaction to Molecular Conductors

Tatsuro Imakubo, Hiroshi Sawa and Reizo Kato

Synth. Met. 73 (1995) 117-122
Synthesis and Crystal Structure of the Molecular Metal Based on Lodine-bonded π-Donor, (IEDT)[Pd(dmit)2]

T.Imakubo, H.Sawa and R.Kato

J. Chem.Soc.Chem.Commun.24 (1995) 1097-1098

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Novel Molecular Conductors, (DIETS)4M(CN)4 (M=Ni,Pd,Pt): Highly Reticulated Donor…Anion Contacts by -I…NC- Interaction

T.Imakubo, H.Sawa and R.Kato

J. Chem.Soc.Chem.Commun. (1995) 1667-1668
Ethylenedithio (ethylenedioxo) diselenadithiafulvalene (TOST) and Ethylenediseleno (ethylenedioxo) tetrathiafulvalene (SO): New Unsymmetrical _-Donors containing Three Elements in the Group 16 (O, S and Se)

T.Imakubo, Y.Okano, H.Sawa and R.Kato

J. Chem.Soc.Chem.Commun. (1995) 2493-2494
Two-Dimensional Ferromagnetic Intermolecular Interactions in Crystals of the p-Cyanophenyl Nitronyl Nitroxide Radical

Y.Hosokoshi, M.Tamura, H.Sawa, R.Kato and M.Kinoshita

J. Mater. Chem. 5 (1995) 41-46
Magnetic Properties and Crystal Structures of 2-Hydro and 2-Halo Nitronyl Nitroxide Radical Crystals

Y.Hosokoshi, M.Tamura, K.Nozawa, S.Suzuki, M.Kinoshita, H.Sawa and R.Kato

Synth. Met. 71 (1995) 1795-1796
Magnetic Interactions in the Crystals of _- and _- phases of 2-Hydro Nitronyl Nitroxide and Related Compounds

Y.Hosokoshi, M.Tamura, K.Nozawa, S.Suzuki, H.Sawa, R.Kato and M.Kinoshita

Mol. Cryst. Liq. Cryst. 271 (1995) 115- 122
Superstructure Analyses on Single Crystals of Li0.8VO2

Katsuhiro Imai, Hiroshi Sawa, Masayoshi Koike, Masashi Hasegawa and Humihiko Takei

J. Solid State Chem. 114 (1995) 184-189
Weak Ferromagnetism in (DBr-DCNQI)2Cu (DBr-DCNQI = 2,5-dibromo- N,N' - dicyanoquinonediimine)

M.Tamura, H.Sawa S.Aonuma, R.Kato and M.Kinoshita

J. Phys. Soc. Jpn.63 (1994) 425-428
Magnetic Study of Metal-Insulator-Metal Transitions in (DMe-DCNQI- α, α’・・ -d2) 2Cu

M.Tamura, H.Sawa S.Aonuma, R.Kato and M.Kinoshita

J. Phys. Soc. Jpn.63 (1994) 429-432
Coexistence of One- and Three-dimensional Fermi Surfaces and Heavy Cyclotron Mass in the Molecular Conductor (DMe-DCNQI)2Cu

S.Uji, T.Terashima, H.Aoki, J.S.Brooks, R.Kato, H.Sawa, S.Aonuma, M.Tamura and M.Kinoshita

Phys. Rev. B 50 (1994) 15597-15601
Charge-Transfer-Controlled Phase Transition in a Molecular Conductor, (DMe-DCNQI)2 Cu -- Doping Effect --

H.Sawa, M.Tamura, S.Aonuma, M.Kinoshita and R.Kato

J. Phys. Soc. Jpn.63 (1994) 4302-4305

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Magnetic Structure of the 4,4,4',4',5,5,5',5'-Octamethyl-2,2'-m-phenylenebis (4,5-dihydroimidazol-1-oxyl 3-Oxide)Biradical: Quantum Spin Effect of S=1 Species Associated with Structural Change

Daisuke Shiomi, Masafumi Tamura, Hiroko Aruga Katori, Tsuneaki Goto, Akihiko Hayashi, Yutaka Ueda, Hiroshi Sawa, Reizo Kato and Minoru Kinoshita

J. Mater. Chem. 4 (1994) 915-920
Magnetic Properties and Crystal Structure of the p-Fluorophenyl Nitronyl Nitroxide Radical Crystal: Ferromagnetic Intermolecular Interactions Leading to a Three-Dimensional Network of Ground Triplet Dimeric Molecules

Yuko Hosokoshi, Masafumi Tamura, Minoru Kinoshita, Hiroshi Sawa, Reizo Kato, Youko Fujiwara and Yutaka Ueda

J. Mater. Chem. 4 (1994) 1219-1226
A New Nonmagnetic Heavy-electron Compound, CeFeGe3

Hiroshi Yamamoto, Hiroshi Sawa and Masayasu Ishikawa

Phys. Lett. A 196 (1994) 83-86
Heavy-Electron Behavior in CePd3.8Al7.2

Jiro Kitagawa, Naoya Takeda, Hiroshi Sawa and Masayasu Ishikawa

J. Phys. Soc. Jpn.63 (1994) 1281-1284
Order-Disorder Transformation in an Al-Ni-Co Decagonal Quasicrystal

K.Edagawa, H.Sawa and S.Takeuchi

Phil. Magazine Lett. 69 (1994) 227-234
Synthesis of DMe-DCNQI-d7 and Deuterium-induced Metal-insulator Transition of (DMe-DCNQI-d7)2Cu

Shuji Aonuma, Hiroshi Sawa, Yoshinori Okano and Reizo Kato

Synth. Met. 58 (1993) 29-38
Preparation and Physical Properties of an Alloyed (DMe-DCNQI)2Cu with Fully Deuterated DMe-DCNQI (DMe-DCNQI = 2,5-dimethyl- N,N' - dicyanoquinonediimine)

Reizo Kato, Hiroshi Sawa, Shuji Aonuma, Masafumi Tamura and Minoru Kinoshita

Solid State Commun .85 (1993) 831-835
Evidence for Reentrant Structural-Phase Transition in DCNQI-Cu System

H.Kobayashi, H.Sawa, S.Aonuma and R.Kato

J. Am. Chem. Soc. 115 (1993) 7870-7871
Giant Metal-Insulator-Metal Transition Induced by Selective Deuteration of the Molecular Conductor, (DMe-DCNQI)2Cu DMe-DCNQI = 2,5-dimethyl- N,N'- dicyanoquinonediimine)

S.Aonuma, H.Sawa, R.Kato and H.Kobayashi

Chem. Lett. (1993) 513-516
Novel Electronic States of Partially Deuterated (DMe-DCNQI)2Cu

H.Sawa, M.Tamura, S.Aonuma, R.Kato, M.Kinoshita, H.Kobayashi

J. Phys. Soc. Jpn.62 (1993) 2224-2228

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Weak Ferromagnetism and Magnetic Anisotropy in Cu Salt of Fully Deuterated DMe-DCNQI, (DMe-DCNQI-d8)2Cu

M.Tamura, H.Sawa S.Aonuma, R.Kato, M.Kinoshita and H.Kobayashi

J. Phys. Soc. Jpn.62 (1993) 1470-1473
Metallic and Superconducting Salts Based on an Unsymmetrical π-donor Dimethyl (ethylenedithio)Tetraselenafulvalene (DMET-TSeF)

Reizo Kato, Shuji Aonuma, Yoshinori Okano, Hiroshi Sawa, Masafumi Tamura and Minoru Kinoshita Kokichi Oshima Akiko Kobayashi Kozo Bun and Hayao Kobayashi

Synth. Met. 61 (1993) 199-206
Synthesis, Conductivity, and Structure of a Novel Organic Conductor (TMET-STF)2ClO4. Coexistence of One- and Two-dimensional Donor Columns

Y. Okano, H.Sawa, S. Aonuma and R. Kato

Chem. Lett. (1993) 1851-1854
Magnetic Properties of an Organic Biradical, m-BNN : m-Phenylene Bis(_-Nitronyl Nitroxide)

D. Shiomi, M.Tamura, H.Sawa, R. Kato and M.Kinoshita

J. Phys. Soc. Jpn.62 (1993) 289-300
Novel Magnetic Interactions in Organic Polyradical Crystals Based on Nitronyl Nitroxide

D. Shiomi, M.Tamura, H.Sawa, R. Kato and M.Kinoshita

Synth. Met. 56 (1993) 3279-3284
Magnetic Properties and Crystal Structure of Some Nitronyl Nitroxide Derivatives

K.Nozawa, Y.Hosokoshi, D. Shiomi, M.Tamura, N.Iwasawa, H.Sawa, R. Kato and M.Kinoshita

Synth. Met. 56 (1993) 3323-3326
Magnetic Properties of Phenyl Nitronyl Nitroxides

M.Tamura, D.Shiomi, Y.Hosokoshi, N.Iwasawa, K.Nozawa,M.Kinoshita, H.Sawa and R.Kato

Mol. Cryst. Liq. Cryst. 232 (1993) 45-52
Magnetic Energy Gap in the Crystal of an Organic Biradical, m-BNN : m-BNN:m-Phenylene Bis(_-Nitronyl Nitroxide)

D. Shiomi, H.A.Katori, T.Goto, H.Sawa, R. Kato, M.Tamura and M.Kinoshita

Mol. Cryst. Liq. Cryst. 232 (1993) 109-116
Growth and Crystal Structure of LiCuO2

K.Imai, M.Koike, H.Sawa and H.Takei

J. Crys. Growth. 128 (1993) 808-812
Structural Change in Li1-xVO2 (xs0.2) Single Crystals

K.Imai, M.Koike, H.Sawa and H.Takei

J. Solid State Chem. 102 (1993) 277-280

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Stable Molecular Metals Based on a Novel Unsymmetrical Diselenadithiafulvalene

S.Aonuma, Y.Okano, H.Sawa, R.Kato and H.Kobayashi

Chem. Commun. (1992) 1193-1195
Growth and Properties of Li-deficient Lithium Vanadium Dioxide Single Crystals

H.Takei, M.Koike, K.Imai, H.Sawa, H.Kadowaki and Y.Iye

Materials Research Bulletin 27 (1992) 555-562
Preparation, Crystal Structure and Magnetic Property of a New Compound LiCuO2

K.Imai, M.Koike, H.Takei, H.Sawa, D.Shiomi, K.Nozawa and M.Kinoshita

J. Phys. Soc. Jpn.61 (1992) 1819-1820
A New Non-Cu-Oxide Superconductor: (Sr1-xLnx)Nb2O6-y (ln: La, Nd, Pr and Ce)

Jun Akimitsu, Jiro Amano, Hiroshi Sawa, Osamu Nagase, Kazuhiro Gyoda and Manami Kogai

Jpn. J. Appl. Phys. 30 (1991) L1155-1156
Copper Spin Correlations in a Two-dimensional Antiferromagnet Pr2CuO4-δ・

H.Yoshizawa, S.Mitsuda, H.Mori, Y.Yamada, T.Kobayashi, H.Sawa and J.Akimitsu

J. Phys. Soc. Jpn. 59 (1990) 428-431
Nonstoichiometry and Mixed Pr Valency in (Pr1-xSrx)(Pr1-yCey)CuO4-z

H.Kito, H.Sawa, J.Akimitsu, F.Izumi, T.Ishigaki and H.Asano

Jpn. J. Appl. Phys. 29 (1990) L1803-1806
Unusually Simple Crystal Structure of an Nd-Ce-Sr-Cu-O Superconductor

H.Sawa, S.Suzuki, M.Watanabe, J.Akimitsu, H.Matsubara, H.Watabe, S.Uchida, K.Kokusho, H.Asano, F.Izumi and E.Takayama-Muromachi

Nature 337 (1989) 347-348
Space-Group Determination of a New Superconductor (Nd0.66Sr0.205Ce0.135)2CuO 4-_・Using Convergent-Beam Electron Diffraction

K.Tsuda, M.Tanaka, J.Sakanoue, H.Sawa, S.Suzuki and J.Akimitsu

Jpn. J. Appl. Phys. 28 (1989) L389-391
Metal Ordering and Oxygen Displacements in (Nd,Sr,Ce)2CuO4-y

F.Izumi, E.Takayama-Muromachi, A.Fujimori, J.Akimitsu and H.Sawa

Physica C 158 (1989) 440-448
A New Family of Superconducting Copper Oxides: (Ln1-xCex)2(Ba1-yLny)2Cu3O10-_・ (Ln: Nd, Sm, Eu)

H.Sawa, K.Obara, J.Akimitsu, Y.Matsui and S.Horiuchi

J. Phys. Soc. Jpn.58 (1989) 2252-2255

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A New Family of High-TC Superconductors: (Ln1-xCex)2(Ba1-yLny)2Cu3O10-z (Ln: Nd, Sm, Eu and Gd)

J.Akimitsu and H.Sawa:Strong Correlation and Superconductivity edited by H.Fukuyama, S.Maekawa and A.P.Malozemoff (Springer-Verlag)
Oxygen Deficiency and Displacements in Superconducting (Ba1-xNdx)2(Nd1-yCey)2Cu3O8+z

F.Izumi, H.Kito, H.Sawa, J.Akimitsu and H.Asano

Physica C 160 (1989) 235-242
Planar Defects in the New Superconducting Oxide (Ba1-xEux)2(Eu1-yCey)2Cu3Oz Observed by High-Resolution Transmission Electron Microscopy

Y.Matsui, H.Horiuchi, H.Sawa, K.Obara and J.Akimitsu

Jpn. J. Appl. Phys. 28 (1989) L1555-1557
Successive Magnetic Phase Transitions in Nd2CuO4

J.Akimitsu, H.Sawa, T.Kobayashi, H.Fujiki and Y.Yamada

J. Phys. Soc. Jpn.58 (1989) 2646-2649
Superconducting and Electronic Properties of Bi1-xLaxSrCuOy System

M.Onoda, M.Sera, K.Fukuda, S.Kondoh and M.Sato T.Den, H.Sawa and J. Akimitsu

Solid State Communications 60 (1988) 189-193
Crystal Substructure of the Bi-Sr-Cu-O System

H.Sawa, H.Fujiki, K.Tomimoto and J.Akimitsu

Jpn. J. Appl. Phys. 27 (1988) L830-832
Long Period Structures in the Bi-Sr-Cu-O System

H.Fujiki, M.Sano, K.Tomimoto, H.Sawa, J.Akimitsu and N.Kitamura

Jpn. J. Appl. Phys. 27 (1988) L1044-1046
Superconductivity in the Nd-Sr-Ce-Cu-O System

J.Akimitsu, S.Suzuki, M.Watanabe and H.Sawa

Jpn. J. Appl. Phys. 27 (1988) L1859-1860
High-TC Superconductivity of Y-Ba-Cu-O System

J.Akimitsu, T.Ekino, H.Sawa, K.Tomimoto, T.Nakamichi, M.Oshiro, Y.Matsubara, H.Fujiki and N.Kitamura

Jpn. J. Appl. Phys. 26 (1987) L449-451
Superconductivity in the Bi-Sr-Cu-O System

J.Akimitsu, A.Yamazaki, H.Sawa and H.Fujiki

Jpn. J. Appl. Phys. 26 (1987) L2080-2081

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