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=1/2 two-dimensional frustrated antiferromagnet Cs
CuBr
Ono, Toshio*; Tanaka, Hidekazu*; Kolomiyets, O.*; Mitamura, Hiroyuki*; Goto, Tsuneaki*; Nakajima, Kenji; Osawa, Akira; Koike, Yoshihiro; Kakurai, Kazuhisa; Klenke, J.*; et al.
Journal of Physics; Condensed Matter, 16(11), p.S773 - S778, 2004/03
Times Cited Count：70 Percentile：89.51(Physics, Condensed Matter)no abstracts in English
and 
CuBr at high pressureYoshiasa, Akira*; Okube, Maki*; Otaka, Osamu*; Kamishima, Osamu*; Katayama, Yoshinori
Japanese Journal of Applied Physics, Part 1, 39(12A), p.6747 - 6751, 2000/12
Times Cited Count：11 Percentile：46.00(Physics, Applied)The anharmonic effective pair potentials 
for Br-Cu bond in and CuBr under pressure have been investigated by an extended X-ray absorption fine structure (EXAFS) technique. The EXAFS spectra near the Br K-edge were measured under high temperature and high pressure using a large-volume uniaxial press and synchrotron radiation from SPring-8. The anharmonic effective pair potential for each phase is influenced by pressure and become steeper with increasing pressure. The potential parameter 
for 
-phase at 0.1MPa increases by about 20% at the pressure of 4.8GPa. The stastical distribution of Cu in 
-CuBr and superionic conduction mechanism have been discussed based on the effective pair potential and distribution of Br-Cu distances.
