Microstructure-coercivity relationships of Nd-Fe-B Base permanent magnets

K. Hono, T. Ohkubo, H. Sepehri-Amin

Research output: Contribution to journalReview articlepeer-review

20 Citations (Scopus)


In spite of the long research history of Nd-Fe-B magnets, the understanding of the microstructure-coercivity relationships is not sufficient because of the difficulty of high quality microscopy work due to the strong oxidation tendency of Nd-rich phases during microscopy specimen preparation processes. In this paper, we review recent investigations on the microstructure-coercivity relationships using scanning electron microscopy, high resolution transmission electron microscopy (HRTEM) and laser assisted three-dimensional atom probe (3DAP) and discuss how to enhance the coercivity of Nd-Fe-B anisotropic magnets without using Dy.

Original languageEnglish
Pages (from-to)2-11
Number of pages10
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Issue number1
Publication statusPublished - 2012 Jan
Externally publishedYes


  • Coercivity
  • Microstructure
  • Neodymium-iron-boron permanent magnet

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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