• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Annual Conference on Magnetism and Magnetic Materials >(07A714) Magnetic domain observation of Nd-Cu-d if fused Nd-Fe-B magnets with submicron grains by Kerr effect microscopy
【24h】

(07A714) Magnetic domain observation of Nd-Cu-d if fused Nd-Fe-B magnets with submicron grains by Kerr effect microscopy

机译：（07A714）ND-CU-B磁域观察ND-CU-B通过KERR效应显微镜用亚微米晶粒熔融ND-Fe-B磁体

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The domain structure and magnetization process of Nd-Cu-diffused magnets prepared from hydrogenation-disproportionation-desorption-recombination (HDDR)-processed powders and Nd-Cu powders were examined with a high-resolution Kerr microscope using an ultraviolet light source. We found that the coercivity of the HDDR magnet depends on the volume of magnetically coupled grains that simultaneously reverse their magnetization. In a magnet that has no Nd-Cu, and in which the Nd-rich phase along the grain boundaries is absent, magnetization reversal simultaneously occurs in several grains. In contrast, in a Nd-Cu-diffused magnet that contains adequate Nd-rich phases along the grain boundaries, magnetization reversal occurs independently in each grain. It foL1_0ws that the change in microstructure caused by the presence of Nd-Cu leads to a decoupled magnetization reversal, and domain wall pinning is an important coercivity mechanism of an HDDR magnet compacted by hot-pressing.
机译：使用紫外线光源用高分辨率kerr显微镜检查由氢化 - 歧化 - 解吸重组（HDDR）制备的Nd-Cu-扩散磁体的域结构和磁化过程。我们发现HDDR磁体的矫顽力取决于同时逆转其磁化的磁耦合颗粒的体积。在没有ND-Cu的磁体中，并且其中不存在沿晶界的Nd的相位，在几颗粒中同时发生磁化反转。相反，在沿着晶界含有足够的ND阶段的Nd-Cu散射磁体中，在每个谷物中独立地发生磁化反转。它Fol1_0ws通过ND-Cu的存在引起的微观结构的变化导致去耦磁化反转，域壁钉扎是通过热压压实的HDDR磁体的重要矫顽力机制。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号