Magnetic Domain Evolution in Sintered Nd–Fe–B Magnet during Magnetization Process

  • Qiang Ma
  • Ze-Yu Zhang
  • Zhi-Feng Hu
  • Xue-Feng Zhang
  • Ming Yue
  • Yan-Li Liu
  • Fei Liu
  • Xiang-Ming Ju
  • Jiu-Xing Zhang
Review Paper
  • 21 Downloads

Abstract

In the present study, the magnetic domains and their evolution during magnetization process have been investigated for sintered Nd–Fe–B permanent magnets with Kerr microscopy. Observation of the magnetic domain evolution process during magnetization process shows that some domain walls were pinned at the grain boundary area under magnetic field up to 5 kOe. It is suggested that magnetic interaction between individual Nd2Fe14B grains contacting to each other leads to appearance of small closed domains near the grain boundary area, which are responsible for the pinning effect.

Keywords

Magnetic domains Sintered Nd–Fe–B magnet Kerr microscopy Domain evolution Magnetization 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Qiang Ma
    • 1
    • 2
    • 3
  • Ze-Yu Zhang
    • 2
  • Zhi-Feng Hu
    • 2
  • Xue-Feng Zhang
    • 1
  • Ming Yue
    • 3
  • Yan-Li Liu
    • 1
    • 2
  • Fei Liu
    • 2
  • Xiang-Ming Ju
    • 2
  • Jiu-Xing Zhang
    • 3
  1. 1.Key Laboratory of Integrated Exploitation of Bayan Obo Multi-Metal Resources (KLIEBR)InnerMongolia University of Science and TechnologyBaotouChina
  2. 2.School of ScienceInner Mongolia University of Science and TechnologyBaotouChina
  3. 3.College of Materials Science and EngineeringBeijing University of TechnologyBeijingChina

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