Exchange interactions and Curie temperatures in Fe-2 NiZ compounds
文献类型：期刊论文
| 作者 | Wei, Xiao-Ping1; Zhang, Ya-Ling2 ; Sun, Xiao-Wei1; Song, Ting1; Guo, Peng1; Gao, Ying1; Zhang, Jia-Liang1; Zhu, Xing-Feng3; Deng, Jian-Bo4
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| 刊名 | JOURNAL OF ALLOYS AND COMPOUNDS
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| 出版日期 | 2017-02-15 |
| 卷号 | 694页码:1254-1259 |
| 关键词 | Heusler alloys Magnetic moment Exchange interaction Curie temperature |
| ISSN号 | 0925-8388 |
| DOI | 10.1016/j.jallcom.2016.10.105 |
| 英文摘要 | Using the spin-polarized relativistic Korringa-Kohn-Rostoker method, we study the exchange interactions and Curie temperatures of Fe-2 NiZ (Z= Al, Ga, Si, Ge) with the Hg-2 CuTi structure. The Heisenberg exchange coupling parameters and Curie temperatures are obtained by calculating the exchange interactions between the constituents. It is found the nearest neighbor exchanges play a leading role in interactions, the calculated Curie temperatures, which are higher than the room temperature, decrease when changing Z from III to IV group. In addition, we study the influence of lattice constant on magnetic moments and Curie temperatures. It is found the Fe magnetic moments become more larger due to the reduction of atomic orbital overlap as the expansion of lattice parameters. Only small changes are observed for the moment of Ni atom, while for the Z atom, the magnetic moment is nearly constant. Finally, the Curie temperatures of Fe-2 NiZ compounds under different lattice constants are acquired by using the mean-field approximation. (C) 2016 Elsevier B.V. All rights reserved. |
| WOS关键词 | HEUSLER ALLOYS ; MAGNETIC-PROPERTIES ; GE ; CO ; 1ST-PRINCIPLES ; BEHAVIOR ; FILMS ; GA ; AL ; SI |
| 资助项目 | Young Scholars Science Foundation of Lanzhou Jiaotong University[2015028] ; Natural Science Foundation for Distinguished Young Scholars of Gansu Province[145RJDA323] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000390622900162 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | Young Scholars Science Foundation of Lanzhou Jiaotong University ; Natural Science Foundation for Distinguished Young Scholars of Gansu Province |
| 源URL | [http://119.78.100.186/handle/113462/44014]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wei, Xiao-Ping |
| 作者单位 | 1.Lanzhou Jiaotong Univ, Sch Math & Phys, Lanzhou 730070, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Nanjing Normal Univ, Dept Phys, Nanjing 210023, Jiangsu, Peoples R China 4.Lanzhou Univ, Dept Phys, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wei, Xiao-Ping,Zhang, Ya-Ling,Sun, Xiao-Wei,et al. Exchange interactions and Curie temperatures in Fe-2 NiZ compounds[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2017,694:1254-1259. |
| APA | Wei, Xiao-Ping.,Zhang, Ya-Ling.,Sun, Xiao-Wei.,Song, Ting.,Guo, Peng.,...&Deng, Jian-Bo.(2017).Exchange interactions and Curie temperatures in Fe-2 NiZ compounds.JOURNAL OF ALLOYS AND COMPOUNDS,694,1254-1259. |
| MLA | Wei, Xiao-Ping,et al."Exchange interactions and Curie temperatures in Fe-2 NiZ compounds".JOURNAL OF ALLOYS AND COMPOUNDS 694(2017):1254-1259. |
入库方式： OAI收割
来源：近代物理研究所
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