Hard Magnetic Properties of Fe-Nd-B Alloys Containing Intergranular Amorphous Phase

Akihisa Inoue, Akira Takeuchi, Tsuyoshi Masumoto, Akihiro Makino

研究成果: Article査読

41 被引用数 (Scopus)

抄録

Fe-rich Fe-Nd-B amorphous alloys containing 88 to 90 at% Fe annealed for 60–300 s at 923–1023 K have the nanostructure consisting of bcc-Fe, Fe14Nd2B and remaining amorphous phases, and exhibit rather good hard magnetic properties, i.e., remanence (Br) of 1.28 T, coercive field (iHc) of 252 kA/m and maximum energy product ((BH)max) of 146 kJ/m3 for Fe89Nd7B4. The nanoscale Fe14Nd2B particles with a size of about 30 nm are surrounded by the bcc-Fe and amorphous phases which act as a magnetic exchange-coupled medium. The nanoscale coexistence of the three ferromagnetic phases is important for the achievement of the rather good hard magnetic properties. The simultaneous achievement of the high Br and (BH)max values and the residual existence of the amorphous phase for the Fe-rich alloys containing about 90 at% Fe has significant engineering importance because of the expectations of high deformability and low cost.

本文言語English
ページ(範囲)3626-3628
ページ数3
ジャーナルIEEE Transactions on Magnetics
31
6
DOI
出版ステータスPublished - 1995 11月
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 電子工学および電気工学

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