中国物理B ›› 2001, Vol. 10 ›› Issue (12): 1169-1171.doi: 10.1088/1009-1963/10/12/317

• • 上一篇    

MAGNETIC VISCOSITY AND DEMAGNETIZATION BEHAVIOUR IN ISOTROPIC NANOCRYSTALLINE Pr12Fe82B6 RIBBONS

D. Goll1, H. Kronmüller1, 张绍英2, 沈保根2, 张宏伟3   

  1. (1)Max-Planck-Institut für Metallforschung, Heisenbergstrasse 1, Stuttgart 70569, Germany; (2)State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; (3)State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; Max-Planck-Institut für Metallforschung, Heisenbergstrasse 1, Stuttgart 70569, Germany
  • 收稿日期:2001-10-17 出版日期:2001-12-15 发布日期:2005-06-12
  • 基金资助:
    Project supported by the State Key Project of Fundamental Research (G1998061305) and the National Natural Science Foundation (59971063) of China. H. W. Zhang was also supported by the exchanging plan between CAS (China) and MPG (Germany).

MAGNETIC VISCOSITY AND DEMAGNETIZATION BEHAVIOUR IN ISOTROPIC NANOCRYSTALLINE Pr12Fe82B6 RIBBONS

Zhang Hong-wei (张宏伟)ab, Zhang Shao-ying (张绍英)a, Shen Bao-gen (沈保根)a, D. Gollb, H. Kronmüllerb    

  1. a State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China; b Max-Planck-Institut für Metallforschung, Heisenbergstrasse 1, Stuttgart 70569, Germany
  • Received:2001-10-17 Online:2001-12-15 Published:2005-06-12
  • Supported by:
    Project supported by the State Key Project of Fundamental Research (G1998061305) and the National Natural Science Foundation (59971063) of China. H. W. Zhang was also supported by the exchanging plan between CAS (China) and MPG (Germany).

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摘要： We present the experimental results of the magnetic viscosity, demagnetization curve and recoil loop for isotropic nanocrystalline Pr12Fe82B6 ribbons prepared by melt-spinning. The thermal fluctuation field, activation volume and irreversible demagnetization are discussed. The coercivity mechanism is mainly determined by the inhomogeneous nucleation rather than a simple nucleation of reverse domain.

Abstract: We present the experimental results of the magnetic viscosity, demagnetization curve and recoil loop for isotropic nanocrystalline Pr12Fe82B6 ribbons prepared by melt-spinning. The thermal fluctuation field, activation volume and irreversible demagnetization are discussed. The coercivity mechanism is mainly determined by the inhomogeneous nucleation rather than a simple nucleation of reverse domain.

Key words: magnetic viscosity, nanocrystalline, permanent magnet

中图分类号:  (Magnetic aftereffects)

  • 75.60.Lr
75.50.Tt (Fine-particle systems; nanocrystalline materials) 75.50.Vv (High coercivity materials) 75.60.Ej (Magnetization curves, hysteresis, Barkhausen and related effects) 75.50.Ww (Permanent magnets) 75.30.Cr (Saturation moments and magnetic susceptibilities)