Magnetocaloric effect in the double perovskites Sr2RRuO6 (R = Dy and Tb)

被引：0
作者：
Hase M. [1 ]
Tsujii N. [1 ]
Mamiya H. [1 ]
机构：
[1] National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba
来源：
Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy | 2020年 / 67卷 / 04期
关键词：
Magnetic entropy change; Magnetic refrigeration; Magnetocaloric effect;
D O I：
10.2497/jjspm.67.182
中图分类号：
学科分类号：
摘要：
We studied the magnetic entropy change (ΔSm) of the double perovskites Sr2RRuO6 (R = Dy and Tb). The magnetic entropy change shows a peak near the second-order phase transition temperature (∼40 K). The values of maximum-ΔSm and relative cooling power for a magnetic-field change of 5 T are 2.41 J/(kg K) and 48 J/kg for the DyRu compound and 1.72 J/(kg K) and 36 J/kg for the TbRu compound, respectively. Strong interactions between the rare-earth and transition-metal magnetic moments shift-ΔSm of the rare-earth moments to high temperatures. We compared the results of Sr2RRuO6 (R = Dy and Tb) with those of oxides possessing a giant magnetocaloric effect. © 2020 Japan Society of Powder and Powder Metallurgy.
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页码：182 / 187
页数：5
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