Magnetism of Nd-Fe films as a model of grain boundary phase in Nd-Fe-B permanent magnets

被引：42
|
作者：
Sakuma, Akimasa [1 ]
Suzuki, Tsuneaki [1 ]
Furuuchi, Takahiro [2 ]
Shima, Toshiyuki [2 ]
Hono, Kazuhiro [3 ]
机构：
[1] Tohoku Univ, Dept Appl Phys, Sendai, Miyagi 9808579, Japan
[2] Tohoku Gakuin Univ, Fac Engn, Tagajo, Miyagi 9858537, Japan
[3] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
来源：
APPLIED PHYSICS EXPRESS | 2016年 / 9卷 / 01期
关键词：
AMORPHOUS-ALLOYS; SINTERED MAGNET; COERCIVITY; MICROSTRUCTURE; TEMPERATURE; DEPENDENCE; EXCHANGE; METALS;
D O I：
10.7567/APEX.9.013002
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
To clarify the magnetism of an amorphous grain boundary (GB) phase in Nd-Fe-B sintered magnets, the magnetic properties of Nd100-xFex films with various compositions have been investigated both experimentally and theoretically. The model films exhibit ferromagnetism at room temperature when the Nd content is lower than 70 at. %. First-principles calculations indicate ferromagnetism in fcc Nd-Fe alloys for x < 70, which supports recent experimental works on the intergrain exchange coupling of Nd-Fe-B sintered magnets. (C) 2016 The Japan Society of Applied Physics
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页数：4
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