| Fe3O4 Segregation and Transport Properties of La0.67Ca0.33MnO3 |
| |
| 作者姓名： | 周千学 戴明星 王仁卉 冯新南 王杨 夏正才 |
| |
| 作者单位： | [1]Department of Physics, Wuhan University, Wuhan 430072 [2]Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
| |
| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 59972024. |
| |
| 摘 要： |
|
| 关 键 词： | Fe3O4分离 晶粒边界 实验结果 跃迁温度 顺磁性 铁磁性 |
| 收稿时间： | 2006-04-01 |
| 修稿时间： | 2006-04-01 |
Fe3O4 Segregation and Transport Properties of La0.67Ca0.33MnO3 |
| |
| ZHOU Qian-Xue,DAI Ming-Xing,WANG Ren-Hui,FENG Xin-Nan,WANG Yang,XIA Zheng-Cai.Fe3O4 Segregation and Transport Properties of La0.67Ca0.33MnO3[J].Chinese Physics Letters,2006,23(8):2194-2197. |
| |
| Authors: | ZHOU Qian-Xue DAI Ming-Xing WANG Ren-Hui FENG Xin-Nan WANG Yang XIA Zheng-Cai |
| |
| Institution: | 1.Department of Physics, Wuhan University, Wuhan 430072; 2.Department of Physics, Huazhong University of Science and Technology, Wuhan 430074 |
| |
| Abstract: | Effect of Fe3O4 segregation at grain boundaries on the electrical transport and magnetic properties of La0.67Ca0.33MnO3 is investigated. The experimental results show that the Fe3O4 segregation not only shifts the paramagnetic-ferromagnetic transition temperature of La0.6TCa0.33MnO3 to a lower temperature region but also induces a new transition in a lower temperature region. Meanwhile, the transition processes observed in both the resistivity and magnetization curves are obviously widened. Compared to pure La0.67Ca0.33MnO3, we assume that the Fe3O4 segregation level at the grain boundaries can modify the electrical transport and magnetic properties of La0.67Ca0.33MnO3. |
| |
| Keywords: | 71 30 +h 75 30 Kz 75 30 Vn |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理快报》浏览原始摘要信息 |
| 点击此处可从《中国物理快报》下载免费的PDF全文 |
