Hard magnetic properties of nanocrystalline Fe-Nd-B alloys containing α-Fe and intergranular amorphous phase

Akihisa Inoue, Akira Takeuchi, Akihiro Makino, Tsuyoshi Masumoto

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)

Abstract

The hard magnetic properties of nanocrystalline Fe-Nd-B alloys containing α-Fe and intergranular amorphous phase were investigated. The remanence was found to have a maximum value of 1.17 T. The precipitated crystallites have the particle sizes of 20 to 60 nm and the thickness of the intergranular amorphous layer is 5 to 30 nm. Further increase in annealing temperature and annealing time causes the increase in particle size of their precipitates as well as the disappearance of the residual amorphous phase. The intergranular amorphous phase as well as the bcc-Fe phase is presumed to act as an effective magnetic exchange-coupled medium.

Original languageEnglish
Pages (from-to)676-685
Number of pages10
JournalMaterials Transactions, JIM
Volume36
Issue number5
DOIs
Publication statusPublished - 1995

ASJC Scopus subject areas

  • Engineering(all)

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