Abstract

The specific heat and the magnetocaloric effect of intermetallic LaFe_11.2 – xMn_xCo_0.7Si_1.1 (x = 0, 0.1, 0.2, 0.3) compounds have been measured in the temperature range 80–300 K in magnetic fields up to 8 T. The magnetocaloric effect (MCE) is estimated by two methods: the direct method in cyclic magnetic fields and also indirect method from the data on the specific heat. An increase in the Mn atom concentration leads to a shift of the Curie temperature T_C toward lower temperatures; in this case, the MCE magnitude is changed insignificantly.

中文翻译：

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LaFe 11.2 – x Mn x Co 0.7 Si 1.1的比热和磁热效应（x = 0、0.1、0.2、0.3）

摘要

在80至300 K的温度范围内，最高磁场强度为8 T的情况下，测量了金属间LaFe _{11.2 –  x} Mn _x Co _0.7 Si _1.1（x = 0，0.1，0.2，0.3）化合物的比热和磁热效应。磁热效应（MCE）可通过两种方法估算：循环磁场中的直接方法，以及根据比热数据的间接方法。Mn原子浓度的增加导致居里温度T _C向较低温度移动；这导致居里温度T _C向较低温度移动。在这种情况下，MCE值的变化很小。