中国物理B ›› 2004, Vol. 13 ›› Issue (4): 552-555.doi: 10.1088/1009-1963/13/4/025

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Magnetization and demagnetization behaviours of melt-spun Pr12Fe82B6 and Pr8Fe87B5 ribbons

闫羽1, 金汉民1, 张宏伟2, 荣传兵2, 张健2, 张绍英2, 沈保根2, 杜晓波3   

  1. (1)Department of Physics, Jilin University, Changchun 130023, China; (2)State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; (3)State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; Department of Physics, Jilin University, Changchun 130023, China
  • 收稿日期:2003-07-16 修回日期:2003-08-29 出版日期:2004-04-22 发布日期:2004-04-20
  • 基金资助:
    Project supported by the State Key Project of Fundamental Research (G 1998061305) and the National Natural Science Foundation of China (Grant No 10274102).

Magnetization and demagnetization behaviours of melt-spun Pr12Fe82B6 and Pr8Fe87B5 ribbons

Du Xiao-Bo (杜晓波)ab, Zhang Hong-Wei (张宏伟)a, Rong Chuan-Bing (荣传兵)a, Zhang Jian (张健)a, Zhang Shao-Ying (张绍英)a, Shen Bao-Gen (沈保根)a, Yan Yu (闫羽)b, Jin Han-Min (金汉民)b    

  1. a State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; b Department of Physics, Jilin University, Changchun 130023, China
  • Received:2003-07-16 Revised:2003-08-29 Online:2004-04-22 Published:2004-04-20
  • Supported by:
    Project supported by the State Key Project of Fundamental Research (G 1998061305) and the National Natural Science Foundation of China (Grant No 10274102).

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摘要： Nanocrystalline Pr_{12}Fe_{82}B_6 and nanocomposite Pr_8Fe_{87}B_5 ribbons have been prepared using a melt spinning technique. Recoil loops have been measured at 20, 200 and 300K. Demagnetization curves are analysed by dividing it into reversible and irreversible portions. High recoil loop susceptibility at low applied field and large reversible change in the demagnetization curve have been found in Pr_8Fe_{87}B_5 ribbons, showing that the reversible behaviours in nanocomposite permanent magnets originate primarily from the magnetically soft phase. The hysteresis in recoil loops found in Pr_8Fe_{87}B_5 ribbons originates from the soft phase α-Fe that suffers a stress.

关键词: nanocomposite magnets, recoil loops, permeability, reversible and irreversible behaviour

Abstract: Nanocrystalline Pr$_{12}$Fe$_{82}$B$_6$ and nanocomposite Pr$_8$Fe$_{87}$B$_5$ ribbons have been prepared using a melt spinning technique. Recoil loops have been measured at 20, 200 and 300K. Demagnetization curves are analysed by dividing it into reversible and irreversible portions. High recoil loop susceptibility at low applied field and large reversible change in the demagnetization curve have been found in Pr$_8$Fe$_{87}$B$_5$ ribbons, showing that the reversible behaviours in nanocomposite permanent magnets originate primarily from the magnetically soft phase. The hysteresis in recoil loops found in Pr$_8$Fe$_{87}$B$_5$ ribbons originates from the soft phase α-Fe that suffers a stress.

Key words: nanocomposite magnets, recoil loops, permeability, reversible and irreversible behaviour

中图分类号:  (Nanocrystalline materials)

  • 81.07.Bc
75.50.Tt (Fine-particle systems; nanocrystalline materials) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 75.30.Cr (Saturation moments and magnetic susceptibilities) 75.50.Ww (Permanent magnets) 81.20.-n (Methods of materials synthesis and materials processing)