Anisotropic coercivity and the effects of interlayer exchange coupling in CoFeB/FeRh bilayers
文献类型：期刊论文
| 作者 | Zhang, Chenyu; Xie, Yali; Zhan, Qingfeng; Hu, Yong |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2021 |
| 卷号 | 103期号:1 |
| 关键词 | MAGNETOCRYSTALLINE ANISOTROPY BIAS FIELD |
| 英文摘要 | In an amorphous CoFeB layer, coercivity becomes anisotropic with fourfold symmetry when the CoFeB layer exchange couples to an FeRh layer. The angular dependence of coercivity of the CoFeB layer coincides with the in-plane easy-axis direction of the FeRh layer and experiences a 45 degrees shift with the occurrence of a metamagnetic phase transition of the FeRh layer from antiferromagnetism at room temperature to ferromagnetism at 400 K. The intriguing phenomena are well reproduced by our unbiased Monte Carlo simulation. The interfacial exchange and anisotropy energies, as well as the interfacial magnetization in the CoFeB/FeRh bilayer, are disentangled to demonstrate the strong dependence of the imprinting of anisotropy in the CoFeB layer on the interfacial exchange coupling. The evolution of the easy-axis direction of the induced anisotropy arises from the reconstruction of the interfacial exchange energy profile accompanied with the change of the magnetic state of FeRh, which governs the magnetization reversal of the CoFeB layer at both branches. Moreover, the imprinting is further applicable for the uniaxial magnetocrystalline anisotropy. This work not only presents the possibility of directly duplicating anisotropy between dissimilar materials, but it also provides a powerful tool to probe the hidden magnetic structures and/or the properties of materials that have weak magnetism, such as antiferromagnetic materials. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22256]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Zhan, QF (corresponding author), East China Normal Univ, Sch Phys & Elect Sci, State Key Lab Precis Spect, Shanghai 200241, Peoples R China. 2.Zhan, QF (corresponding author), East China Normal Univ, Sch Phys & Elect Sci, Key Lab Polar Mat & Devices MOE, Shanghai 200241, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Zhang, Chenyu,Xie, Yali,Zhan, Qingfeng,et al. Anisotropic coercivity and the effects of interlayer exchange coupling in CoFeB/FeRh bilayers[J]. PHYSICAL REVIEW B,2021,103(1). |
| APA | Zhang, Chenyu,Xie, Yali,Zhan, Qingfeng,&Hu, Yong.(2021).Anisotropic coercivity and the effects of interlayer exchange coupling in CoFeB/FeRh bilayers.PHYSICAL REVIEW B,103(1). |
| MLA | Zhang, Chenyu,et al."Anisotropic coercivity and the effects of interlayer exchange coupling in CoFeB/FeRh bilayers".PHYSICAL REVIEW B 103.1(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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