Lorentz Electron Microscope Observation of Domain Walls in Fe–Nd–B Alloy Permanent Magnets
Lorentz Electron Microscope Observation of Domain Walls in Fe–Nd–B Alloy Permanent Magnets
复制标题
Fe-Nd-B 合金永磁体中畴壁的洛伦兹电子显微镜观察
DOI：
10.1143/jjap.23.l421
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发表时间：
1984
影响因子：
1.5
通讯作者：
M. Sagawa
中科院分区：
文献类型：
--
作者：
Takao Suzuki;K. Hiraga;M. Sagawa
用高压电子显微镜观察了烧结Fe_（77）Nd_（15）B_8永磁体的畴壁结构。在表面具有c轴的晶粒中，180°壁的壁宽约为50 μ m，这与纯布洛赫壁的预期一致。然而，发现180°壁图像宽度沿着c轴的显著变化，这可能是由于壁平面相对于样品表面的倾斜。
Domain and wall structures of sintered Fe77Nd15B8 permanent magnets have been examined by high voltage electron microscopy. A wall width of a 180° wall in a grain having the c-axis in the surface is about 50 Å, which agrees with that expected from a pure Bloch wall. However, a significant variation of a 180° wall image width along the c-axis was found, which is presumably due to a tilting of a wall plane with respect to the sample surface.