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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Very large refrigerant capacity at room temperature with reproducible magnetocaloric effect in Fe_(0.975)Ni_(0.025)Rh
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Very large refrigerant capacity at room temperature with reproducible magnetocaloric effect in Fe_(0.975)Ni_(0.025)Rh

机译：Fe_（0.975）Ni_（0.025）Rh中具有可重现的磁热效应的室温下非常大的制冷剂容量

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摘要

We present the results of magnetocaloric effect (MCE) measurements on Fe_(0.975)Ni_(0.025)Rh. The MCE is estimated using both the isothermal field-dependent magnetization and the temperature-dependent magnetization in constant magnetic fields. We find a very large effective refrigerant capacity of nearly 492.8 J kg~(-1), with the hot end at about 307 K, which is reproducible over many field cycles. We compare this refrigerant capacity with those of two well known systems, namely Gd _5Ge_(1.9)Si_2Fe_(0.1) and MnFeP _(0.45)As_(0.55), which show a large MCE near room temperature, and also with our earlier results on the parent Fe-Rh alloy. The large effective refrigerant capacity in our sample is one of the largest achieved yet at room temperature with a significant improvement over the parent Fe-Rh system.
机译：我们提出了Fe_（0.975）Ni_（0.025）Rh的磁热效应（MCE）测量结果。在恒定磁场中，使用等温场相关的磁化强度和温度相关的磁化强度来估算MCE。我们发现非常大的有效制冷剂容量接近492.8 J kg〜（-1），热端约为307 K，在许多现场循环中均可重现。我们将该制冷剂容量与两个众所周知的系统的制冷剂容量进行比较，这两个系统分别是Gd _5Ge_（1.9）Si_2Fe_（0.1）和MnFeP _（0.45）As_（0.55），它们在室温附近显示出大的MCE，并且还与我们先前的结果母体Fe-Rh合金。我们样品中的有效制冷剂容量大，是室温下迄今为止获得的最大制冷剂容量之一，与母体Fe-Rh系统相比有了显着改善。

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