Tunneling magnetoresistance of Co granules in AIN/Co/AIN type discontinuous films
文献类型：期刊论文
| 作者 | C. J. Yang ; M. Zhang ; Z. D. Zhang |
| 刊名 | Journal of the Korean Physical Society
 |
| 出版日期 | 2003 |
| 卷号 | 43期号:5页码:762-768 |
| 关键词 | tunneling spindependent cluster giant magnetoresistance multilayers ferromagnets transport junctions |
| ISSN号 | 0374-4884 |
| 中文摘要 | Magnetic transport phenomena in rf sputtered AlN/Co type ten-layered discontinuous films of nanoscaled [AlN(3 nm)/Co(t nm)]...(10) with t(Co) = 1.0 similar to 2.0 nm have been investigated. The nanostructures and tunneling magnetic resistance of the samples are strongly dependent on the thickness of the Co layer. Negative tunneling magneto-resistance due to the spin-dependent transport has been observed along the current-in-plane configuration in the samples having the Co layers below 1.6 nm thick. When the thickness of Co layer was less than 1.2 nm, randomly oriented granular Co particles were completely isolated and embedded in an amorphous AlN matrix, and the films showed the superparamagnetic behavior with a high MR, value of Deltarho/rho(0) = 3.5%. As t(Co) increases, a transition from the regime of co-existence of superparamagnetic and ferromagnetic behaviors to ferromagnetic behavior was observed. The tunneling barrier "decay length for tunneling" for films having a Co layer thickness from 1.4 to 1.6 nm was measured to be in the range from 0.004 to 0.021 Angstrom(-1). An enhanced TMR. was observed after annealing which is subscribed to an increase of about 100% in activation energy for tunneling. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36103]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | C. J. Yang,M. Zhang,Z. D. Zhang. Tunneling magnetoresistance of Co granules in AIN/Co/AIN type discontinuous films[J]. Journal of the Korean Physical Society,2003,43(5):762-768. |
| APA | C. J. Yang,M. Zhang,&Z. D. Zhang.(2003).Tunneling magnetoresistance of Co granules in AIN/Co/AIN type discontinuous films.Journal of the Korean Physical Society,43(5),762-768. |
| MLA | C. J. Yang,et al."Tunneling magnetoresistance of Co granules in AIN/Co/AIN type discontinuous films".Journal of the Korean Physical Society 43.5(2003):762-768. |
入库方式： OAI收割
来源：金属研究所
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