Large inverse magnetocaloric effect in Ni45Co5Mn37.5In12.5 single crystal above 300 K
Large inverse magnetocaloric effect in Ni45Co5Mn37.5In12.5 single crystal above 300 K
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DOI：
10.1063/1.3372633
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发表时间：
2010-03-29
影响因子：
4
通讯作者：
Chaud, Xavier
中科院分区：
文献类型：
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作者：
Bourgault, Daniel;Tillier, Jeremy;Chaud, Xavier
在Ni_（45）Co_（55）Mn_（37.5）In_（12.5）单晶中观察到了室温下较大的逆磁热效应。在不同的磁场下进行的磁热测量揭示了一个铁磁转变与马氏体-马氏体相变。Heusler单晶在355 K的一级磁结构转变过程中，在外加磁场为7 T时显示出30 J/Kg K的大熵变。它导致在7 T下的267 J/Kg的净制冷剂容量，这对于磁制冷应用是非常令人鼓舞的。
A large inverse magnetocaloric effect has been observed in a Ni45Co5Mn37.5In12.5 single crystal at room temperature. Magnetothermal measurements performed at different magnetic fields reveal a nonmagnetic to ferromagnetic transition correlated with the austenite-martensite phase transformation. The Heusler single crystal shows a large entropy change of 30 J/Kg K at an applied magnetic field of 7 T during the first-order magnetostructural transition at 355 K. It leads to a net refrigerant capacity of 267 J/Kg at 7 T, which is very encouraging for magnetic refrigeration applications.