Magnetocaloric effect in Gd1-xNdxZn2

被引：3
|
作者：
Matsumoto, Keisuke T. [1 ]
Hiraoka, Koichi [1 ]
机构：
[1] Ehime Univ, Grad Sch Sci & Engn, 3 Bunkyo Cho, Matsuyama, Ehime 7908577, Japan
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2017年 / 438卷
关键词：
Magnetocaloric effect; NdZn2; Gd1-xNdxZn2; TRANSITIONS;
D O I：
10.1016/j.jmmm.2017.04.064
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetization of Gd1-xNdxZn2 (0 < x <= 1) was measured to study the effect of Nd substitution in GdZn2 with a Curie temperature of 85 K and a spin-reorientation transition temperature of 58 K on the magnetocaloric effect. The Nd counterpart NdZn2 shows antiferromagnetic order at 23 K. Samples of Gd1-xNdxZn2 (0 < x <= 1) were prepared by the melt-growth method. In Nd-substituted systems, the anomaly due to spin-reorientation disappeared. For x >= 0.6, field-induced metamagnetic transitions were observed, indicating an antiferromagnetic ground state. This complex magnetism may originate from competition between ferromagnetic and antiferromagnetic interactions. Magnetic entropy change Delta S-m was calculated based on the magnetization measurements. Delta S-m was suppressed by Nd substitution for x values up to 0.6. For x = 1 (NdZn2), the maximum value of Delta S-m was -9 J/K kg, which is almost the same as those of other Nd-based magnetocaloric materials. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码：107 / 110
页数：4
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