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首页> 外文期刊>Physica, B. Condensed Matter >Magnetocaloric effect in UNiGa compound with the multiple magnetic phase transitions
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Magnetocaloric effect in UNiGa compound with the multiple magnetic phase transitions

机译:具有多个磁性相变的UNiGa化合物的磁热效应

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摘要

The magnetocaloric effect (MCE) in the UNiGa compound has been studied using the dc magnetization measurement technique. This system shows normal and inverse MCEs at low field around the paramagnetic to ferrimagnetic transition temperature (38.4 K), and the ferrimagnetic to antiferromagnetic transition temperature (34.5 K), respectively. At higher fields, the inverse MCE becomes very weak, which could be explained due to the presence of a field-induced metamagnetic phase transition. The maximum value of the magnetic entropy change -Delta S-M, for Delta mu H-0 = 5T, has been found to be 3.56 J kg(-1) K-1 at similar to 37.2 K with a relative cooling power of 22.5 J kg(-1).
机译:已使用直流磁化测量技术研究了UNiGa化合物中的磁热效应(MCE)。该系统分别在顺磁到亚铁磁转变温度(38.4 K)和亚铁磁到反铁磁转变温度(34.5 K)的低场附近显示正态和逆MCE。在较高的磁场中,逆MCE变得非常弱,这可能是由于磁场引起的亚磁相变而引起的。已经发现,对于Δmu H-0 = 5T,磁熵变的最大值-Delta SM为3.56 J kg(-1)K-1,与37.2 K相似,相对冷却功率为22.5 J kg (-1)。

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