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MAGNETIC VISCOSITY OF CHAIN-SPHERICAL Fe ULTRA-FINE PARTICLES

GAO XIAO-YUN LI JIN HOU DENG-LU YANG FU-MING ZHONG XIA-PING LUO HE-LIE

MAGNETIC VISCOSITY OF CHAIN-SPHERICAL Fe ULTRA-FINE PARTICLES

GAO XIAO-YUN, LI JIN, HOU DENG-LU, YANG FU-MING, ZHONG XIA-PING, LUO HE-LIE
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  • Received Date:  06 November 1992
  • Accepted Date:  30 March 1993
  • Published Online:  10 July 2005

MAGNETIC VISCOSITY OF CHAIN-SPHERICAL Fe ULTRA-FINE PARTICLES

  • 1. (1)北京化工学院,北京100029; (2)中国科学院物理研究所,北京100080

Abstract: This paper reports the study on the magnetic vicosity for chain-spherical Fe UFP prepared by laser pyrolysis. Fluctuation field,anisotropy and active volume of the particles were measured and calculated. The results show that the reverse magnetizing unit is made up of n chain spheres,and equivalent to a single-domain with uniaxial particle. Variation tendency of active volume of the particles is similiar to the acicular γ-type ferric oxide particles.

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