The specific heat of LaCu2O4 and NdCu2O4 in fields to 7 T

被引：8

作者：

Fisher, RA ^{[1
]}

Wright, DA ^{[1
]}

Radhakrishna, P ^{[1
]}

Luce, JL ^{[1
]}

Stacy, AM ^{[1
]}

Phillips, NE ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Dept Chem, Low Temp Lab, Berkeley, CA 94720 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 177卷

基金：

美国国家科学基金会;

关键词：

specific heat; entropy; antiferromagnetism; spin waves; magnetic ordering;

D O I：

10.1016/S0304-8853(97)00307-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Specific heats for LaCu2O4 and NdCu2O4, with two inequivalent Cu sites [Cu2+ (S = 1/2, magnetic) and Cu3+ (S = 1, nonmagnetic)], were measured in fields to 7 T. The field-dependent ordering of the Cu2+ had an associated field-independent entropy of 0.29R In 2 instead of the expected R in 2. NdCu2O4 had an additional specific-heat anomaly for Nd3+ and gamma(H)T terms nearly two orders of magnitude greater than those for LaCu2O4. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：787 / 788

页数：2

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