Experimental approaches for micromagnetic coercivity analysis of advanced permanent magnet materials

Research output: Contribution to journalArticlepeer-review

Abstract

Although coercivity is one of the fundamental properties of permanent magnets, it has not been well understood. In this paper, micromagnetics and thermal activation magnetization reversal theories are briefly reviewed, and then our recent macroscopic and microscopic experimental approaches for thermally activated magnetization reversal in advanced Nd-Fe-B hot-deformed magnets are explained. Our experimental results are well supported by the recent atomistic spin model calculations. Moreover, the systematic micromagnetics simulation study makes much clearer the physical picture of the thermally activated magnetization reversal process in permanent magnets.

Original languageEnglish
Pages (from-to)124-134
Number of pages11
JournalScience and Technology of Advanced Materials
Volume22
Issue number1
DOIs
Publication statusPublished - 2021

Keywords

  • 203 Magnetics
  • Coercivity
  • Nd-Fe-B
  • Spintronics
  • Superconductors
  • magnetization reversal
  • thermal activation

ASJC Scopus subject areas

  • Materials Science(all)

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