CROSSOVER FROM DIVERGENT TO NON-DIVERGENT NATURE OF THE ORDERED TO PARAMAGNETIC TRANSITIONS OF ALPHA-MNCL2.4H2O AS A FUNCTION OF APPLIED FIELD

被引：5

作者：

BUTERA, RA ^{[1
]}

MOSKAITIS, RJ ^{[1
]}

RUTTER, DR ^{[1
]}

OBERMYER, RT ^{[1
]}

机构：

[1] PENN STATE UNIV,MCKEESPORT,PA 15134

来源：

JOURNAL OF APPLIED PHYSICS | 1979年 / 50卷 / 03期

关键词：

D O I：

10.1063/1.327193

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The thermodynamic functions CH, (∂M/∂T)H and [(∂M/∂H)T- (∂M/∂H)S] have been determined as a function of temperature over the range 0.5 to 2.0 K for a spherical single crystal of α-MnCl2·4H2O with magnetic fields up to 20 kG applied parallel to the c-crystallographic axis. The data clearly show that the lamba anomaly in [(∂M/∂H) T-(∂M/∂H)S] associated with the transition from the ordered to paramagnetic state changes character at the bicritical point and completely disappears for fields greater than 8.4 kG. The region for fileds greater than 8.4 kG also corresponds to apparent non-power law behavior of the heat capacity and (∂M/∂T)H. The bicritical behavior is shown to be consistant with that of a antiferromagnet with orthorhombic anisotropy.

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页码：1847 / 1849

页数：3

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