文章基本信息

标题：Unveiling the Mechanism for the Split Hysteresis Loop in Epitaxial Co₂Fe_1-xMn_xAl Full-Heusler Alloy Films
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作者：X. D. Tao ; H. L. Wang ; B. F. Miao 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2016
卷号：6
DOI：10.1038/srep18615
出版社：Springer Nature
摘要：Utilizing epitaxial Co₂Fe_1-xMn_xAl full-Heusler alloy films on GaAs (001), we address the controversy over the analysis for the split hysteresis loop which is commonly found in systems consisting of both uniaxial and fourfold anisotropies. Quantitative comparisons are carried out on the values of the twofold and fourfold anisotropy fields obtained with ferromagnetic resonance and vibrating sample magnetometer measurements. The most suitable model for describing the split hysteresis loop is identified. In combination with the component resolved magnetization measurements, these results provide compelling evidences that the switching is caused by the domain wall nucleation and movements with the switching fields centered at the point where the energy landscape shows equal minima for magnetization orienting near the easy axis and the field supported hard axis.