Magnetic-field-induced enhancement for synthesizing ferromagnetic MnBi phase by solid-state reaction sintering
Magnetic-field-induced enhancement for synthesizing ferromagnetic MnBi phase by solid-state reaction sintering
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DOI：
10.1016/j.jallcom.2014.06.131
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发表时间：
2014-12
影响因子：
6.2
通讯作者：
Y. Mitsui;R. Umetsu;K. Koyama;Kazuo Watanabe
中科院分区：
文献类型：
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作者：
Y. Mitsui;R. Umetsu;K. Koyama;Kazuo Watanabe
在高达15 T的强磁场下，采用固相反应烧结法制备了铁磁性MnBi，在15 T下烧结的样品中，铁磁性MnBi相的质量分数约为70%，远高于在零磁场下烧结的样品。研究发现，强磁场显著促进了铋和锰相MnBi的形成。此外，MnBi的六角形结构的轴向平行于磁场方向。基于塞曼能量增益和MnBi相的单轴磁各向异性，考察了这些磁场对合成过程的影响。
Ferromagnetic MnBi was synthesized by a solid-state reaction sintering method in high magnetic fields up to 15 T. The fraction of ferromagnetic MnBi phase in the sample sintered at 15 T was about 70% by weight, which was much larger than that sintered in a zero magnetic field. It was found that high magnetic fields dramatically enhanced the formation of MnBi phase from bismuth and manganese. In addition, thec-axis of a hexagonal structure of MnBi was oriented parallel to the magnetic field direction. These magnetic field effects on the synthesizing process were examined based on the gain of the Zeeman energy and the uniaxial magnetic anisotropy of MnBi phase.