Effects of Metastable Phase Formation on the Magnetic Properties of Pr_<4.5>Fe_<77>B_<18.5> Amorphous Ribbons

この論文にアクセスする

この論文をさがす

著者

抄録

The effects of isothermal annealing on the magnetic properties of Pr<SUB>4.5</SUB>Fe<SUB>77</SUB>B<SUB>18.5</SUB> amorphous ribbons have been investigated. Two separate reactions increasing coercive force (<I>H</I><SUB>c</SUB>) were recognized during the progress of annealing. In the first reaction, hard magnetic Pr<SUB>2</SUB>Fe<SUB>14</SUB>B particles with nanoscale diameters precipitated in the vicinity of Fe<SUB>3</SUB>B and Pr<SUB>2</SUB>Fe<SUB>23</SUB>B<SUB>3</SUB> particles. The precipitation of fine Pr<SUB>2</SUB>Fe<SUB>14</SUB>B particles increased <I>H</I><SUB>c</SUB> largely but reduced saturation magnetization (<I>M</I><SUB>s</SUB>) significantly. In the second reaction, the Pr<SUB>2</SUB>Fe<SUB>23</SUB>B<SUB>3</SUB> particles decomposed into Pr<SUB>2</SUB>Fe<SUB>14</SUB>B particles containing very fine α-Fe particles within them. This resulted in the second increase in <I>H</I><SUB>c</SUB> due to both the volume fraction increase of Pr<SUB>2</SUB>Fe<SUB>14</SUB>B particles and the exchange-coupling interaction between the Pr<SUB>2</SUB>Fe<SUB>14</SUB>B grains and α-Fe particles within them. This phenomenon was observed originally in the present study. In the final stages of annealing, both <I>H</I><SUB>c</SUB> and <I>M</I><SUB>s</SUB> were decreased substantially by the decomposition of Pr<SUB>2</SUB>Fe<SUB>14</SUB>B into PrFe<SUB>4</SUB>B<SUB>4</SUB> particle in addition to the coarsening of α-Fe particles.

収録刊行物

  • Materials transactions

    Materials transactions 43(4), 660-666, 2002-04-01

    公益社団法人 日本金属学会

参考文献:  17件中 1-17件 を表示

各種コード

  • NII論文ID(NAID)
    10012322278
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    6262980
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ