Novel Magnetic Domain Structure in Iron Meteorite Induced by the Presence of L10-FeNi
Novel Magnetic Domain Structure in Iron Meteorite Induced by the Presence of L10-FeNi
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DOI：
10.1143/apex.3.013001
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发表时间：
2010-01-01
影响因子：
2.3
通讯作者：
Taniguchi, Masaki
中科院分区：
文献类型：
--
作者：
Kotsugi, Masato;Mitsumata, Chiharu;Taniguchi, Masaki
首次利用光电子发射显微镜研究了与魏德曼花纹结构相关的铁陨石的磁性。磁圆二色性图像显示出一种独特的磁畴结构，导致在α和γ薄片之间的界面上出现“正面”磁耦合。这种磁畴结构在任何合成的铁 - 镍合金中都是不利的。微磁学模拟合理地解释了磁畴的形成是由在魏德曼花纹结构边界处偏析的L1(0)型FeNi（四方镍纹石）相诱导的。（C）2010日本应用物理学会
Photoelectron emission microscopy has been carried out to study the magnetic properties of iron meteorite associated with the Widmanstatten structure for the first time. A magnetic circular dichroic image reveals a unique magnetic domain structure, resulting in the "head-on'' magnetic coupling over the interface between the alpha and gamma lamellae. Such a magnetic domain structure is unfavorable in any synthetic Fe-Ni alloys. Micromagnetics simulation reasonably explains that the formation of magnetic domains is induced by the L1(0)-type FeNi (tetrataenite) phase segregated at the boundary in the Widmanstatten structure. (C) 2010 The Japan Society of Applied Physics