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Magnetocaloric effect of the Gd3-xTbxCo system
Intermetallics ( IF 4.3 ) Pub Date : 2020-03-01 , DOI: 10.1016/j.intermet.2019.106686
A. Guzik , E. Talik , P. Zajdel

Abstract Gd3-xTbxCo compounds with x = 0, 0.25, 0.5, 1, 1.5, 2, 2.5 and 3 were investigated using structural and magnetic methods. The lattice parameters, and the location of 4c and 8d Wyckoff sites occupied by Gd, Tb, and Co atoms, in an Fe3C–orthorhombic type of structure, were refined by the Rietveld method. The magnetic ordering temperature changes linearly with Tb content. The magnetocaloric effect (MCE) in Tb3Co at 77 K and a magnetic field of 7 T is equal to −28.8 J/kgK. An inverse MCE observed in GdTb2Co reaches its maximum value of 6.8 J/kgK at 47 K and a magnetic field of 6 T.

中文翻译:

Gd3-xTbxCo 系统的磁热效应

摘要 使用结构和磁性方法研究了 x = 0、0.25、0.5、1、1.5、2、2.5 和 3 的 Gd3-xTbxCo 化合物。晶格参数以及由 Gd、Tb 和 Co 原子占据的 4c 和 8d Wyckoff 位点的位置,在 Fe3C 正交型结构中,通过 Rietveld 方法进行了改进。磁性有序温度随 Tb 含量线性变化。Tb3Co 在 77 K 和 7 T 磁场下的磁热效应 (MCE) 等于 -28.8 J/kgK。在 GdTb2Co 中观察到的逆 MCE 在 47 K 和 6 T 的磁场下达到其最大值 6.8 J/kgK。
更新日期:2020-03-01
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