Abstract The influence of partial substitution of Co by Al atoms on the magnetocaloric and magnetostrictive properties of the multicomponent Tb-Dy-Gd-Co compounds with a Laves phase structure was investigated. The samples were obtained by arc melting using of high-purity rare-earth metals. The crystal structure of Tb 0.2 Dy 0.8 - x Gd x Co 2 - y Al y ( x = 0.3, 0.4, and 0.5; y = 0 and 0.1) compounds was monitored by powder X-ray diffraction. The magnetostriction and the magnetocaloric effect in external magnetic field up to 12 and 18 kOe, respectively, were studied in wide temperature range. The Curie temperature of Al-content compounds increases by an average of 20 K, while the magnitudes of the magnetocaloric effect and the magnetostriction slightly decrease.

中文翻译：

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具有 Laves 相结构的 Tb-Dy-Gd-Co-Al 中的磁热效应和磁致伸缩变形

摘要 研究了Al原子部分取代Co对具有Laves相结构的多组分Tb-Dy-Gd-Co化合物的磁热和磁致伸缩性能的影响。样品是使用高纯稀土金属通过电弧熔炼获得的。Tb 0.2 Dy 0.8 - x Gd x Co 2 - y Al y (x = 0.3、0.4 和 0.5；y = 0 和 0.1) 化合物的晶体结构通过粉末 X 射线衍射监测。在较宽的温度范围内研究了分别高达 12 和 18 kOe 的外部磁场中的磁致伸缩和磁热效应。含铝化合物的居里温度平均增加 20 K，而磁热效应和磁致伸缩的幅度略有下降。