Tunneling magnetoresistance and magnetic properties of Fe-Al2O3 nanogranular films
文献类型：期刊论文
| 作者 | Zhu, T ; Wang, YJ ; Zhao, HW ; Zhao, JG ; Zhan, WS |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 2001 |
| 卷号 | 89期号:11页码:6877 |
| 关键词 | GIANT MAGNETORESISTANCE TEMPERATURE-DEPENDENCE GRANULAR FILMS CLUSTERS FIELD |
| ISSN号 | 0021-8979 |
| 通讯作者 | Zhu, T (reprint author), Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | Tunneling giant magnetoresistance (MR) of the Fe-Al2O3 nanogranular films has been observed over a wide range of Fe volume fraction x and it took a maximum of 4.4% at room temperature for the film with x = 0.45 at H = 10 kOe. Furthermore, the field dependence of MR of the samples is well described by the form proportional to the square of the magnetization. Moreover, an estimate of the magnetic anisotropy energy density K-u increases with the decrease of x, yielding a value 2 orders of magnitude greater than the value for bulk Fe when x = 0.23. The Bloch's law, M-S(T) = M-S0(1-BTb), can also hold for all the samples but with nonbulk parameters dependent on the Fe volume fraction. These results reveal a percolation effect on the magnetic properties, as well as the conductance, in such nanogranular films. (C) 2001 American Institute of Physics. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/46211]  |
| 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 | Zhu, T,Wang, YJ,Zhao, HW,et al. Tunneling magnetoresistance and magnetic properties of Fe-Al2O3 nanogranular films[J]. JOURNAL OF APPLIED PHYSICS,2001,89(11):6877. |
| APA | Zhu, T,Wang, YJ,Zhao, HW,Zhao, JG,&Zhan, WS.(2001).Tunneling magnetoresistance and magnetic properties of Fe-Al2O3 nanogranular films.JOURNAL OF APPLIED PHYSICS,89(11),6877. |
| MLA | Zhu, T,et al."Tunneling magnetoresistance and magnetic properties of Fe-Al2O3 nanogranular films".JOURNAL OF APPLIED PHYSICS 89.11(2001):6877. |
入库方式： OAI收割
来源：物理研究所
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