Grain boundary phase formation and magnetic properties of NdFeB/Nd multilayered films

Deshan Li, Shunji Suzuki, Takashi Horikawa, Masahiro Itoh, Ken Ichi Machida

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Two kinds of NdFeB singlelayered and NdFeB/Nd multilayered films were prepared on each Mo substrate using a three-dimensional sputtering system. The singlelayered films annealed at 1073 K consisted of Nd2Fe 14B main phase together with soft magnetic α-Fe phase as an impurity and only showed poor magnetic properties. However, for the multilayered films, the Nd-rich grain boundary phase among the Nd2Fe 14B particles was more effectively formed in a similar manner as conventional NdFeB sintered magnets, so that the α-Fe impurity phase was completely disappeared and the numbers of surface defects on the main phase particles were decreased. The resultant multilayered film magnets of [NdFeB (650nm)/Nd (10nm)]4 gave high HcJ values around 1.58MA/m for Br ≈ 1:21 T and (BH)max ≈ 279kJ/m3, respectively.

Original languageEnglish
Pages (from-to)33002
Number of pages1
JournalJapanese journal of applied physics
Issue number3
Publication statusPublished - 2009 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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