Effect of Ir-Mn composition on exchange bias and thermal stability of spin valves with nano-oxide layers
文献类型：期刊论文
| 作者 | Liu, YF ; Cai, JW ; Lai, WY ; Yu, GH |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2008 |
| 卷号 | 103期号:9 |
| 关键词 | TUNNEL-JUNCTIONS INTERDIFFUSION MULTILAYERS DIFFUSION |
| ISSN号 | 0021-8979 |
| 通讯作者 | Cai, JW: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100080, Peoples R China. |
| 中文摘要 | The Ir-Mn bottom-pinned spin valves with nano-oxide layers (NOLs), Ta/Ni(81)Fe(19)/Ir-Mn/Co(90)Fe(10)/NOL/Co(90)Fe(10)/Cu/Co(90)Fe(10)/NOL/Ta, were fabricated by dc magnetron sputtering. The magnetoresistance (MR), magnetization, and exchange bias have been studied as a function of Ir-Mn composition and annealing temperature. It was observed that the spin valves with the Ir-Mn layer containing relatively low Mn content (58.9-72.4 at. % Mn) show the best thermal endurance. For these samples, the Mn diffusion is effectively hampered by the NOL with a large MR value of about 12.5% even after annealing at 300 degrees C. On the other hand, the exchange bias field of the pinned CoFe layer shows a maximum at Mn content of about 72.4 at. %, which is different from the widely adopted composition, Ir-80 at. % Mn, optimized from the top-pinned NiFe/Ir-Mn system. Moreover, the blocking temperature of the Ir-Mn/CoFe system with 72.4 at. % Mn is higher than that with 80.6 at. % Mn. The present results suggest that the Ir-Mn/CoFe pinning system with Mn content at about 72% renders the most favorable exchange bias and the best thermal stability for the bottom-pinned specular spin valves. (c) 2008 American Institute of Physics. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36463]  |
| 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 | Liu, YF,Cai, JW,Lai, WY,et al. Effect of Ir-Mn composition on exchange bias and thermal stability of spin valves with nano-oxide layers[J]. JOURNAL OF APPLIED PHYSICS,2008,103(9). |
| APA | Liu, YF,Cai, JW,Lai, WY,&Yu, GH.(2008).Effect of Ir-Mn composition on exchange bias and thermal stability of spin valves with nano-oxide layers.JOURNAL OF APPLIED PHYSICS,103(9). |
| MLA | Liu, YF,et al."Effect of Ir-Mn composition on exchange bias and thermal stability of spin valves with nano-oxide layers".JOURNAL OF APPLIED PHYSICS 103.9(2008). |
入库方式： OAI收割
来源：物理研究所
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