Enhancement of coercivity in high remanence HDDR Nd-Fe-B powders

H. Nakamura, K. Kato, D. Book, S. Sugimoto, M. Okada, M. Homma

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


A new type of HDDR (Hydrogénation, Disproportionation, Desorption, Recombination) processing route, in which alloys are heated up under a low pressure of H2 for the disproportionate] stage, was found to be an effective way of obtaining high remanence Nd-Fe-B ternary powders, with no large decrease in coercivity (which was the problem with the previous HDDR processing route, in which the alloys were heated under vacuum). The alloys with 0. 5 % Ga addition exhibited high coercivities of 1. 0 MAm'1 with no degradation in remanence CBr = 1. 4T).

Original languageEnglish
Pages (from-to)3274-3276
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number5 PART 2
Publication statusPublished - 1999


  • Anisotropic powder
  • HDDR
  • High coercivity
  • Nd-fe-b

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


Dive into the research topics of 'Enhancement of coercivity in high remanence HDDR Nd-Fe-B powders'. Together they form a unique fingerprint.

Cite this