期刊
JOURNAL OF APPLIED PHYSICS
卷 115, 期 17, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4863490
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资金
- National Science Foundation (NSF) [1031619]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1031619] Funding Source: National Science Foundation
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. (C) 2014 AIP Publishing LLC.
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