PRESSURE-DEPENDENCE OF PHASE-TRANSITION TEMPERATURES IN OXYGENATED SINGLE-CRYSTALLINE LA2CUO4.035

被引:8
作者
ITOH, M
HUANG, TK
YU, JD
INAGUMA, Y
NAKAMURA, T
机构
[1] Research Laboratory of Engineering Materials, Tokyo Institute of Technology, Midori-ku, Yokohama 227
来源
PHYSICAL REVIEW B | 1995年 / 51卷 / 02期
关键词
D O I
10.1103/PhysRevB.51.1286
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The pressure dependence of the phase-transition temperatures for oxygenated La2CuO4.035 single crystals was investigated in the pressure range <14 kbar. Three successive phase transitions, one at 295 K with second-order character, one around 265 K with martensitic-transition character, and the other around 222 K with first-order character, were found to be suppressed under pressure. The pressure coefficient of the superconducting temperature dTc/dp turned from -0.5 to +0.7 K/kbar when the three successive phase transitions were suppressed by pressure. © 1995 The American Physical Society.
引用
收藏
页码:1286 / 1289
页数:4
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