Critical behavior in La0.5Sr0.5CoO3

被引:51
作者
Mukherjee, S [1 ]
Raychaudhuri, P [1 ]
Nigam, AK [1 ]
机构
[1] Tata Inst Fundamental Res, Mumbai 400005, India
来源
PHYSICAL REVIEW B | 2000年 / 61卷 / 13期
关键词
D O I
10.1103/PhysRevB.61.8651
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have studied the critical behavior in La0.5Sr0.5CoO3 near the paramagnetic to ferromagnetic transition temperature. We have analyzed our de magnetization data near the transition temperature with the help of the modified Arrot plot, Kouvel-Fisher method. We have determined the critical temperature T-c and the critical exponents beta, gamma, and delta. With the values of T-c, beta, and gamma, we plot M/(1 - T/T-c)(beta) vs H/(1 - T/T-c)(gamma). All the data collapse on one of the two curves. This suggests that the data below and above T-c obeys scaling, following a single equation of state. The exponents are close to Heisenberg values.
引用
收藏
页码:8651 / 8653
页数:3
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