K2FeGe3Se8: A New Antiferromagnetic Iron Selenide
文献类型：期刊论文
| 作者 | Feng, K ; Wang, WD ; He, R ; Kang, L ; Yin, WL ; Lin, ZS ; Yao, JY ; Shi, YG ; Wu, YC |
| 刊名 | INORGANIC CHEMISTRY
 |
| 出版日期 | 2013 |
| 卷号 | 52期号:4页码:2022 |
| ISSN号 | 0020-1669 |
| 通讯作者 | Yao, JY (reprint author), Chinese Acad Sci, Tech Inst Phys & Chem, Ctr Crystal Res & Dev, Beijing 100190, Peoples R China. |
| 中文摘要 | A new iron selenide, K2FeGe3Se8, has been obtained by spontaneous crystallization. It adopts a new group P2(1). In the structure, FeSe4 and GeSe4 tetrahedra are : structure type in the noncentrosymmetric monoclinic space connected alternately via corner-sharing to form one-dimensional (1D) (1)(infinity)[FeGeSe6](6-) chains along the a-direction. These chains are further linked by sharing Ge2Se6 units to generate two-dimensional (2D) (2)(infinity)[FeGe3Se8](2-) layers stacked parallel to the ac-plane and separated by K+ cations. Deduced from temperature-dependent susceptibility measurement and specific heat measurement under different magnetic fields, K2FeGe3Se8 exhibits an antiferromagnetic transition at similar to 10 K. Furthermore, the magnetic property shows anisotropy between directions parallel and perpendicular to the plane of (2)(infinity)[FeGe3Se8](2-) layer. The diffuse reflectance spectra measurement indicates that the band gap of K2FeGe3Se8 is similar to 1.95(2) eV, consistent with the calculated values of 1.80 and 1.53 eV in the spin-up and spin-down directions, respectively. Based on electronic structure calculation, the spin of the Fe2+ cation is 1.85 (h) over bar, which is comparable to the experimental value. |
| 资助信息 | National Basic Research Project of China [2010CB630701]; National Natural Science Foundation of China [91122034, 51102249]; Ministry of Science and Technology of China [2011CBA00110] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57142]  |
| 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 | Feng, K,Wang, WD,He, R,et al. K2FeGe3Se8: A New Antiferromagnetic Iron Selenide[J]. INORGANIC CHEMISTRY,2013,52(4):2022. |
| APA | Feng, K.,Wang, WD.,He, R.,Kang, L.,Yin, WL.,...&Wu, YC.(2013).K2FeGe3Se8: A New Antiferromagnetic Iron Selenide.INORGANIC CHEMISTRY,52(4),2022. |
| MLA | Feng, K,et al."K2FeGe3Se8: A New Antiferromagnetic Iron Selenide".INORGANIC CHEMISTRY 52.4(2013):2022. |
入库方式： OAI收割
来源：物理研究所
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