Metamagnetic phase transformation in Mn50Ni37In10Co3 polycrystalline alloy

Metamagnetic phase transformation in Mn50Ni37In10Co3 polycrystalline alloy
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Mn50Ni37In10Co3多晶合金中的变磁相变

DOI:
10.1063/1.3554423
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发表时间:
2011-02
影响因子:
4
通讯作者:
Guangheng Wu
Guangheng Wu
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Zhigang Wu;Zhuhong Liu;Hong Yang;Yinong Liu;Guangheng Wu

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本文报道了一种基于Co掺杂的Mn-Mn铁磁耦合原理的Mn50Ni37In10Co3合金设计。该合金在奥氏体态下表现出亚磁马氏体相变,饱和磁化强度高达118emu/g。这种转变产生了89emu/g的巨大磁化强度差,是文献中报道的类似合金的200%以上。在170K下获得了完全的磁场诱导马氏体相变,如此高的磁化强度差为磁场诱导相变提供了强大的驱动力,使该材料成为磁驱动应用的候选材料。
This letter reports on an alloy design of Mn50Ni37In10Co3 based on the principle of Mn-Mn ferromagnetic coupling via Co doping. The alloy is shown to exhibit a metamagnetic martensitic transformation and a high saturation magnetization of 118 emu/g in its austenitic state. The transformation generates a large magnetization difference of 89 emu/g, more than 200% of what is reported in the literature for similar alloys. A complete magnetic field induced martensitic transformation was achieved at 170 K. Such a high magnetization difference provides a strong driving force for magnetic-field-induced transformation, making this material a promising candidate for magnetic actuation applications.
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