钡铁氧体粒子反磁化研究

摘要

A model of a chain of oblate ellipsoids is proposed for magnetization reversal of barium ferrite particles. The angular dependences of coercivity and critical field were calculated with the consideration of the uniaxial magnetocrystalline anisotropy, the shape anisotropy, the interaction anisotropy of the ellipsoids, as well as the number of ellipsoids. This model could be used to explain the magnetization reversal mechanism of the oriented Ba ferrite particulate media.%提出了钡铁氧体粒子反磁化的多扁椭球链模型，研究了形状各向异性、磁晶各向异性、层叠粒子数以及粒子间距对反磁化及其临界场、矫顽力的影响. 此模型可用来解释取向钡铁氧体磁粉介质的反磁化机理.