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
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
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.
Received: 16 July 2003
Revised: 29 August 2003
Accepted manuscript online:
(Methods of materials synthesis and materials processing)
Fund: Project supported by the State Key Project of Fundamental Research (G 1998061305) and the National Natural Science Foundation of China (Grant No 10274102).
Cite this article:
Du Xiao-Bo (杜晓波), Zhang Hong-Wei (张宏伟), Rong Chuan-Bing (荣传兵), Zhang Jian (张健), Zhang Shao-Ying (张绍英), Shen Bao-Gen (沈保根), Yan Yu (闫羽), Jin Han-Min (金汉民) Magnetization and demagnetization behaviours of melt-spun Pr12Fe82B6 and Pr8Fe87B5 ribbons 2004 Chinese Physics 13 552
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