Abstract

Magnetocaloric properties of Gd(Ni_0.98Si_0.02) and Dy(Ni_0.95Si_0.05) compounds and their hydrides Gd(Ni_0.98Si_0.02)H₃ and Dy(Ni_0.95Si_0.05)H₄ have been studied in a temperature interval of 2–100 K. It is established that the partial substitution of Si atoms for Ni atoms and subsequent hydrogenation can lead to significant changes in the Curie temperature, magnitude of the magnetocaloric effect, and temperature at which this effect is at maximum. In the hydrides, the characteristic temperatures shift to lower values by several dozen degrees while the magnetocaloric effect increases or remains the same, which can significantly expand the application of these materials in cryogenic technology.

中文翻译：

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基于RNi化合物的新型磁性材料用于低温技术

摘要

Gd（Ni _0.98 Si _0.02）和Dy（Ni _0.95 Si _0.05）化合物及其氢化物的磁热性质Gd（Ni _0.98 Si _0.02）H ₃和Dy（Ni _0.95 Si _0.05）H ₄已经在2-100 K的温度区间内进行了研究。已经确定，Si原子被Ni原子部分取代并随后氢化会导致居里温度，磁热效应的大小以及该温度的显着变化。效果最大。在氢化物中，特征温度会降低数十度，而磁热效应会增加或保持不变，这可以大大扩展这些材料在低温技术中的应用。