Superparamagnetism in MgO-based magnetic tunnel junctions with a thin pinned ferromagnetic electrode
文献类型：期刊论文
| 作者 | Feng, JF ; Chen, JY ; Venkatesan, M ; Feng, G ; Han, XF ; Coey, JMD |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2010 |
| 卷号 | 81期号:20 |
| 关键词 | SPIN-FLIP SCATTERING ROOM-TEMPERATURE MAGNETORESISTANCE FILMS |
| ISSN号 | 1098-0121 |
| 通讯作者 | Feng, JF (reprint author), Trinity Coll Dublin, Sch Phys, Dublin, Ireland. |
| 中文摘要 | MgO-based magnetic tunnel junctions have been fabricated with a thin Co(40)Fe(40)B(20) (CoFeB) layer in the pinned synthetic antiferromagnetic CoFe/Ru/CoFeB stack. An inverted tunneling magnetoresistance is observed due to the unbalanced synthetic antiferromagnet. Superparamagnetic nanoparticles form when the CoFeB layer is thinner than 1.5 nm, and an abnormal temperature dependence of the junction resistance is associated with superparamagnetism when the thermal fluctuation energy exceeds the magnetic anisotropy energy. This explanation accounts for the temperature dependence of the tunneling magnetoresistance effect. |
| 收录类别 | SCI |
| 资助信息 | Science Foundation Ireland; EU; Ministry of Science and Technology (MOST) [2006CB932200]; Chinese National Natural Science Foundation (NSFC) [10574156, 50528101, 50721001]; SFI; State Key Project of Fundamental Research |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/54124]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Feng, JF,Chen, JY,Venkatesan, M,et al. Superparamagnetism in MgO-based magnetic tunnel junctions with a thin pinned ferromagnetic electrode[J]. PHYSICAL REVIEW B,2010,81(20). |
| APA | Feng, JF,Chen, JY,Venkatesan, M,Feng, G,Han, XF,&Coey, JMD.(2010).Superparamagnetism in MgO-based magnetic tunnel junctions with a thin pinned ferromagnetic electrode.PHYSICAL REVIEW B,81(20). |
| MLA | Feng, JF,et al."Superparamagnetism in MgO-based magnetic tunnel junctions with a thin pinned ferromagnetic electrode".PHYSICAL REVIEW B 81.20(2010). |
入库方式： OAI收割
来源：物理研究所
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