94.　High-field ESR study on frustrated spin chain system KCu5V2O13
Y. Inagaki, D. Fukuoka, T. Sakurai, S. Okubo, H. Ohta, H. Sakurai, K. Yoshimura, K. Kosuge, H. Michor and G. Hilscher
Physica B 346-347 (2004) 60-64.

95.　High-field ESR measurements of novel spin chain substance Bi4Cu3V2O14
S. Okubo, T. Hirano, Y. Inagaki, H. Ohta, H. Sakurai, H. Yoshimura and K. Kosuge
Physica B 346-347 (2004) 65-69.

96.　Recent high field ESR studies of low-dimensional quantum spin systems in Kobe
H. Ohta, S. Okubo, Y. Inagaki, Z. Hiroi and H. Kikuchi
Physica B 346-347 (2004) 38-44.

97.　High-field ESR measurements of CsCuCl3 under pressure
T. Sakurai, M. Saruhashi, Y. Inagaki, S. Okubo, H. Ohta, H. Tanaka and Y. Uwatoko
Physica B 346-347 (2004) 221-225.

98.　High-field ESR systems in Kobe
S. Okubo, H. Ohta, Y. Inagaki and T. Sakurai,
Physica B 346-347 (2004) 627-632.

99.　Experimental Examination of Chain-Dimer Model in Ca1-xCuO2 (x=0.164)
Y. Inagaki, H. Ohta, A. Ueda, S. Okubo, Z. Hiroi, M. Okamura, M. Takano,
J. Phys. Soc. Jpn. 73 (2004) 1547-1553.

100.　Breather excitation observed by high-field ESR in one-dimensional antiferromagnet BaCu2(Si1-xGex)2O7 (x=0.65)
H. Ohta, S. Okubo, D. Fukuoka, Y. Inagaki, T. Kunimoto, M. Kimata, K. Koyama, M. Motokawa, Z. Hiroi
J. Magn. Magn. Mater. 272-276 (2004) 929-930.

101.　Submillimeter and Millimeter wave ESR measurements of diamond-chain substance Cu2(CO3)2(OH)2
S. Okubo, T. Kamikawa, T. Kunimoto, Y. Inagaki, H. Ohta, H. Nojiri, H. Kikuchi
J. Magn. Magn. Mater. 272-276 (2004) 912-913.

102.　Direct determination of magnetic anisotropy in S=1 bond alternating system by high field ESR
Y. Inagaki, S. Takeda, S. Okubo, H. Ohta, H. Kikuchi, N. Ogawa, T. Tonegawa
J. Magn. Magn. Mater. 272-276 (2004) e661-e662.

103.　Magnetic phase transition of high-pressure phase (VO)2P2O7 studied by high-field ESR measurements
K. Hiraka, Y. Nagasaka, T. Kunimoto, Y. Inagaki, S. Okubo, H. Ohta, T. Saito, M. Azuma, M. Takano
J. Magn. Magn. Mater. 272-276 (2004) e1675-e1676.

104.　Microwave EPR Spectroscopy of Covalt-Doped Germanium Cuprate
S. V. Demishev, A. V. Semeno, N. E. Sluchanko, N. A. Samarin, A. A. Pronin, Y. Inagaki, S. Okubo, H. Ohta, Y. Oshima, L. I. Leonyuk
Phys. Solid State, 46 (2004) 2238-2248.

105.　High Field ESR Measurements of Organic Compounds
H. Ohta, S. Okubo, T. Sakurai, K. Kirita, K. Kanoda, K. Hiraki, K. Enomoto, A. Miyazaki, T. Enoki, H. Yamamoto, R. Kato,
in Radiobiology and Bio-Medical Research, ed K. P. Mishra, (Narosa Publishing House, New Delhi, 2004) p177-183.

106.　Cyclotron Resonance Measurement of BEDT-TTF Salt Under High Magnetic Field
H. Ohta, Y. Oshima, K. Akioka, S. Okubo and K. Kanoda
in Megagauss Magnetic Field Generation, Its Application to Science and Ultra-High Pulsed-Power Technology, Hans J. Schneider-Muntau Ed., (World Scientific, Singapore, 2004) 250-253.