Magnetic-domain structure of Nd2Fe14B permanent magnets
Magnetic-domain structure of Nd2Fe14B permanent magnets
复制标题
Nd2Fe14B永磁体的磁畴结构
DOI：
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发表时间：
1998
期刊：
影响因子：
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通讯作者：
M. McCartney
中科院分区：
文献类型：
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作者：
Yimei Zhu;M. McCartney
我们报告我们的研究磁畴结构的Nd2Fe14B永磁体使用先进的透射和扫描电子显微镜，包括洛伦兹成像和电子全息。测量了薄晶体的畴壁间距D随厚度t的变化，以及90°和180°畴壁宽度的变化，计算了畴壁能量。在不同的温度和外加磁场下，原位研究了畴结构和畴壁行为的取向和场依赖性。还研究了相应大块样品所特有的特征磁结构特征，如反向尖峰畴和起伏畴边界。
We report our studies of magnetic-domain structure in Nd2Fe14B permanent magnets using advanced transmission and scanning electron microscopy, including Lorentz imaging and electron holography. Domain-wall spacing D was measured as a function of thickness t for thin crystals, and also wall width of 90° and 180° domains; the domain-wall energies were calculated. Orientation and field dependence of the domain configuration and domain-wall behavior were examined in situ under different temperatures and applied fields. Characteristic magnetic structural features unique to corresponding bulk samples, such as reversed spike-domains and undulating domain boundaries, were also investigated.