Phase transition, superstructure and physical properties of K2Fe4Se5
文献类型：期刊论文
| 作者 | Song, YJ ; Wang, Z ; Wang, ZW ; Shi, HL ; Chen, Z ; Tian, HF ; Chen, GF ; Yang, HX ; Li, JQ |
| 刊名 | EPL
 |
| 出版日期 | 2011 |
| 卷号 | 95期号:3 |
| ISSN号 | 0295-5075 |
| 关键词 | SUPERCONDUCTIVITY CRYSTALS CS |
| 通讯作者 | Song, YJ (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | The structural features and physical properties of the antiferromagnetic K0.8Fe1.6Se2 (so-called K2Fe4Se5 phase) have been studied in the temperature range from 300K up to 600 K. Resistivity measurements on both single crystal and polycrystalline samples reveal a semiconducting behavior. Structural investigations of K2Fe4Se5 by means of transmission electron microscopy (TEM) and powder X-ray diffraction (XRD) demonstrate the presence of a well-defined superstructure within the a-b plane originating from a Fe-vacancy order along the [1-10] direction ( indexed based on the supercell with space group of I4/m). Moreover, in situ heating structural analysis shows that K0.8Fe1.6Se2 undergoes a transition of the Fe-vacancy order to disorder at about 600 K. The phase separation and the Fe-vacancy ordering in the superconducting materials of KxFe2-ySe2 (0.2 <= y <= 0.3) has been briefly discussed. Copyright (C) EPLA, 2011 |
| 资助信息 | National Science Foundation of China; Chinese Academy of Sciences; Ministry of Science and Technology of China |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50836]  |
| 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 | Song, YJ,Wang, Z,Wang, ZW,et al. Phase transition, superstructure and physical properties of K2Fe4Se5[J]. EPL,2011,95(3). |
| APA | Song, YJ.,Wang, Z.,Wang, ZW.,Shi, HL.,Chen, Z.,...&Li, JQ.(2011).Phase transition, superstructure and physical properties of K2Fe4Se5.EPL,95(3). |
| MLA | Song, YJ,et al."Phase transition, superstructure and physical properties of K2Fe4Se5".EPL 95.3(2011). |
入库方式： OAI收割
来源：物理研究所
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