Ferromagnetism and double magnetic phase transitions in rapidly solidified Mn1.13Ni1.03Fe0.23Ge0.61 ribbons

Ferromagnetism and double magnetic phase transitions in rapidly solidified Mn1.13Ni1.03Fe0.23Ge0.61 ribbons
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快凝Mn1.13Ni1.03Fe0.23Ge0.61带材中的铁磁性和双磁相变

DOI:
10.1016/j.jallcom.2013.11.063
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发表时间:
2014-03
影响因子:
6.2
通讯作者:
Y.W. Du
Y.W. Du
中科院分区:
材料科学2区
文献类型:
--
作者:
J.F. Ou;Z.C. Zhong;D.H. Wang;Y.W. Du

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在氩气保护下,采用快淬技术制备了Mn 1.13Ni 1.03Fe 0.23Ge 0.61快凝薄带。室温下快淬薄带的X射线衍射分析结果表明,快淬薄带中存在单一的Ni2In结构。更重要的是,实现了具有零热滞后的铁磁相变(约186 K),随后是具有162 K热滞后的另一个磁相变(约166 K)。双磁跃迁导致两个连续的磁熵峰具有相同的符号。讨论了快淬Mn_(1.13)Ni_(1.03)Fe_(0.23)Ge_(0.61)薄带的铁磁性和双磁相变的起源。
The rapidly solidified Mn1.13Ni1.03Fe0.23Ge0.61ribbons are prepared by the melt-spinning technique in argon atmosphere. A single phase with the Ni2In-type structure is confirmed by XRD means in the melt-spun ribbons at room temperature. What is more important, a ferromagnetic phase transition (around ∼186 K) with a zero thermal hysteresis followed by another magnetic transition (around ∼166 K) with a thermal hysteresis of ∼2 K is achieved. Double magnetic transitions lead to two successive magnetic entropy peaks with the same sign accordingly. The origin of ferromagnetism and double magnetic phase transitions in melt-spun Mn1.13Ni1.03Fe0.23Ge0.61ribbons is discussed.
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