Magnetic phase transition and magnetocaloric effect in Mn-Fe-Ni-Ge ribbons
Magnetic phase transition and magnetocaloric effect in Mn-Fe-Ni-Ge ribbons
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Mn-Fe-Ni-Ge带材的磁相变和磁热效应
DOI：
10.1016/j.jallcom.2014.12.250
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发表时间：
2015-04-25
影响因子：
6.2
通讯作者：
Zhong, Z. C.
中科院分区：
文献类型：
--
作者：
Ma, S. C.;Su, Y.;Zhong, Z. C.
制备了两种Mn-Fe-Ni-Ge带状样品。由于固有的反铁磁（AFM）相互作用及其不稳定性，铁取代引起磁场诱导的AFM-铁磁（FM）转换，然后，已建立的FM耦合与固有的AFM相互作用之间的竞争触发了这两个条带在tini型状态下的一级AFM-FM磁弹性跃迁。当AFM-FM转换完成后，这两个条带在室温附近实现了从FM tini型到顺磁性ni2in型的耦合磁结构转变，并具有较大的磁热效应。(C) 2015 Elsevier B.V.版权所有
Two Mn-Fe-Ni-Ge ribbon samples are prepared. Due to the inherent antiferromagnetic (AFM) interaction and its instability, the Fe-substitution induces the magnetic-field-induced AFM-ferromagnetic (FM) conversion and then, the competition between the established FM coupling and the intrinsic AFM interaction triggers the first-order AFM-FM magnetoelastic transition in TiNiSi-type state for these two ribbons. When the AFM-FM conversion completes, the coupled magnetostructural transformation from the FM TiNiSi-type to paramagnetic Ni2In-type state with large magnetocaloric effect near room temperature is achieved in these two ribbons. (C) 2015 Elsevier B.V. All rights reserved.