Structural phase transition and magnetic properties of co-50 fe-50 (-) (x) si-x alloys
文献类型：期刊论文
| 作者 | Zhao Jing-Jing1,2; Shu Di1; Qi Xin1; Liu En-Ke2; Zhu Wei2; Feng Lin2; Wang Wen-Hong2; Wu Guang-Heng2 |
| 刊名 | Acta physica sinica
 |
| 出版日期 | 2011 |
| 卷号 | 60期号:10页码:7 |
| ISSN号 | 1000-3290 |
| 关键词 | Magnetic properties Heusler alloys Structural phase transition |
| 通讯作者 | Qi xin(qixin@mail.buct.edu.cn) |
| 英文摘要 | The structural and the magnetic properties of co-50 fe-50 (-) (x) si-x alloys are investigated by carrying out experimental measurements and electron structure calculation. the alloy series exhibits the highly chemical ordering structure, showing a strong covalent bonding effect. the lattice parameters, molecular moment and curie temperature linearly decrease with the increase of the si content. the deviation of the structure is attributed to the atomic size effect. based on stearns theories, the decrease of the itinerant 3d ( di ) electron results in the decrease of curie temperature due to the substitution of si for fe. the change of molecular moment follows the slater-pauling rule, but the calculation indicates that the change of the atomic moments is not linear. it implies that the covalent bonding effect is responsible for the magnetic changes. the molecular moment and curie temperature of heusler alloy co2fesi are measured to be 5.92 mu(b) and 777 degrees c, respectively. the calculation results also indicate that the half-metallic property of co2fesi may not be so perfect as reported, which requires a new design of energy band for the practical application. the investigation also shows that the structural transition and the magnetic structure transition accumulate in a narrow interval of si content, which may become a good object for studying the interaction between the magnetization and the structure. |
| WOS关键词 | HEUSLER ALLOYS ; HYPERFINE FIELDS ; FERROMAGNETISM ; CO2FESI ; FE ; CO |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | CHINESE PHYSICAL SOC |
| WOS记录号 | WOS:000300718700082 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2373750 |
| 专题 | 物理研究所 |
| 通讯作者 | Qi Xin |
| 作者单位 | 1.Beijing Univ Chem Technol, Sch Sci, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao Jing-Jing,Shu Di,Qi Xin,et al. Structural phase transition and magnetic properties of co-50 fe-50 (-) (x) si-x alloys[J]. Acta physica sinica,2011,60(10):7. |
| APA | Zhao Jing-Jing.,Shu Di.,Qi Xin.,Liu En-Ke.,Zhu Wei.,...&Wu Guang-Heng.(2011).Structural phase transition and magnetic properties of co-50 fe-50 (-) (x) si-x alloys.Acta physica sinica,60(10),7. |
| MLA | Zhao Jing-Jing,et al."Structural phase transition and magnetic properties of co-50 fe-50 (-) (x) si-x alloys".Acta physica sinica 60.10(2011):7. |
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