【摘要】 报道了对激光法制备的链球状纯铁超细磁粉磁粘滞性研究结果。结果表明,n个链球段构成反磁化单元,并等效于一个单轴单畴粒子。不同条件下制备的粉体激活体积的变化趋势与磁性针状氧化物相似。更多还原

【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.更多还原