Negative remanent magnetization

作者：Della Torre Edward^*; Bennett Lawrence H

来源：Journal of Applied Physics, 2014, 115(17): 17A720.

DOI：10.1063/1.4863490

A new model to explore negative remanent magnetization is presented. Recently, a model for magnetic materials that have wasp-waist hysteresis loops was applied to a homogeneous thin film. This model postulated two interacting antiferromagnetically coupled media: one medium with low moment and relatively high coercivity, and one medium with a relatively high moment and low coercivity. This model is applicable to the situation where the "width" of the loop near zero is "negative." The major loop of such a material crosses itself, leading to negative remanent magnetization. The present paper introduces a new concept of a need for a third dimension to add to the usual magnetization versus applied field graph, demonstrates that there is no crossing, and discusses the nature of the losses in these materials.

• 出版日期2014-5-7