Disorder-order phase transition induced by size effect in bulk La2/3Sr1/3MnO3
文献类型：期刊论文
| 作者 | B. Z. Sun ; L. L. He ; C. B. Zhang ; F. Luo ; C. H. Yan |
| 刊名 | Solid State Communications
 |
| 出版日期 | 2006 |
| 卷号 | 137期号:9页码:478-482 |
| 关键词 | La2/3Sr1/3MnO3 ceramic transmission electron microscopy (TEM) simple cubic phase image simulation La-Sr ordered structure space group P3(-)m1 double-exchange giant magnetoresistance transport-properties doped lamno3 la1-xsrxmno3 microstructure perovskites diagram films |
| ISSN号 | 0038-1098 |
| 中文摘要 | Bulk La2/3Sr1/3MnO3 ceramic samples prepared by thermal decomposition are investigated using transmission electron microscopy (TEM) and high-resolution transmission electron microscopy (HRTEM). An abnormal phenomenon, where three kinds of La2/3Sr1/3MnO3 phases with different structures and the same composition coexist in the same grain, has been observed. Besides the stable rhombohedral majority phase, the two other phases are a simple cubic structure with a = 0.389 nm and a new hexagonal structure with a = 0.544 nm, c = 0.668 nm. The simple cubic phase is a residual phase of high-temperature due to the size effect and bondage of twin boundary. Image simulations have suggested that the new hexagonal phase is the La-Sr ordered structure with space group P3m1, which is converted from the disordered simple cubic phase. The formation mechanism of the ordered phase is explained from volume energy and interface energy considerations. (c) 2006 Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34467]  |
| 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 | B. Z. Sun,L. L. He,C. B. Zhang,et al. Disorder-order phase transition induced by size effect in bulk La2/3Sr1/3MnO3[J]. Solid State Communications,2006,137(9):478-482. |
| APA | B. Z. Sun,L. L. He,C. B. Zhang,F. Luo,&C. H. Yan.(2006).Disorder-order phase transition induced by size effect in bulk La2/3Sr1/3MnO3.Solid State Communications,137(9),478-482. |
| MLA | B. Z. Sun,et al."Disorder-order phase transition induced by size effect in bulk La2/3Sr1/3MnO3".Solid State Communications 137.9(2006):478-482. |
入库方式： OAI收割
来源：金属研究所
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