Dependence of the coercivity of La0.67Ca0.33MnO3 films on substrate and thickness
文献类型：期刊论文
| 作者 | Xiong, CM ; Sun, JR ; Wang, DJ ; Liu, GJ ; Zhang, HW ; Shen, BG |
| 刊名 | CHINESE PHYSICS
 |
| 出版日期 | 2005 |
| 卷号 | 14期号:3页码:604 |
| 关键词 | ANGULAR-DEPENDENCE MAGNETIC-ANISOTROPY PERMANENT-MAGNETS THIN-FILMS MN MAGNETORESISTANCE MECHANISM |
| ISSN号 | 1009-1963 |
| 通讯作者 | Xiong, CM: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | We investigate the effects of strain and film thickness on the coercivity of La0.67Ca0.33MnO3 films grown on SrTiO3 and LaAlO3 substrates. Textured microstructure with the grain [001] pseudo-cubic axis normal to the film surface is obtained. The average grain size decreases with decreasing film thickness t. The magnetic anisotropy depends upon the substrate-induced strain. Firstly, the intrinsic coercivity JIG increases as t varies from 5 nm to 10 nm, then attains a maximum at t similar to 10-25nm. A further increase in t yields a gradual reduction of iH(C). By the analysis of the dependence of iH(C) on the measured direction of magnetic field, the coercivity mechanism is assumed to be mainly determined by the nucleation of reversed domain and the domain wall pining for t <= 10nm and t >= 25nm, respectively, which were further verified by the investigation of the initial magnetization curves for the LCMO/STO films with t = 5, 10, 25 and 400nm, and the minor magnetic loops for the LCMO/LAO films with t = 5 and 50nm. Moreover, the size of the inhomogeneous region in which the nucleation or pinning takes place is discussed. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35755]  |
| 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 | Xiong, CM,Sun, JR,Wang, DJ,et al. Dependence of the coercivity of La0.67Ca0.33MnO3 films on substrate and thickness[J]. CHINESE PHYSICS,2005,14(3):604. |
| APA | Xiong, CM,Sun, JR,Wang, DJ,Liu, GJ,Zhang, HW,&Shen, BG.(2005).Dependence of the coercivity of La0.67Ca0.33MnO3 films on substrate and thickness.CHINESE PHYSICS,14(3),604. |
| MLA | Xiong, CM,et al."Dependence of the coercivity of La0.67Ca0.33MnO3 films on substrate and thickness".CHINESE PHYSICS 14.3(2005):604. |
入库方式： OAI收割
来源：物理研究所
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