Effects of Ga substitution on structure and magnetocrystalline anisotropy of Tm2Fe17
文献类型：期刊论文
| 作者 | Shen, BG ; Cheng, ZH ; Wang, FW ; Yan, QW ; Tang, H ; Liang, B ; Zhang, SY |
| 刊名 | JOURNAL OF APPLIED PHYSICS
 |
| 出版日期 | 1998 |
| 卷号 | 83期号:11页码:5945 |
| 关键词 | MAGNETIC-PROPERTIES NEUTRON-DIFFRACTION SOLID-SOLUTIONS R(2)FE(17-X)GA(X) COMPOUNDS MOSSBAUER R=Y SM2FE17-XSIX FE-57 IRON TB |
| ISSN号 | 0021-8979 |
| 通讯作者 | Shen, BG: Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | A detailed investigation of the structure and magnetic properties of Tm2Fe17-xGax (x = 0, 1, 2, 3, 4, 5, 6, 7, and 8) compounds has been performed by means of x-ray-diffraction, neutron-diffraction, magnetization, and ac-susceptibility measurements. Crystal-structure studies have shown that the prepared samples are single phase with the hexagonal Th2Ni17 for x less than or equal to 3 and the rhombohedral Th2Zn17 structure for x greater than or equal to 5, In Tm2Fe13Ga4 the Th2Zn17 structure coexists with the Th2Ni17 structure. Substitution of Ga for Fe in Tm2Fe17 leads to an increase of the unit-cell volume, which is linear with the Ga concentration. In Tm2Fe17-xGax, the saturation magnetization at 1.5 K decreases linearly with increasing Ga content with a rate of 2.3 mu(B), per substituted Ga atom. The Curie temperature is found first to increase with increasing Ga content, going through a maximum value of 485 K at about x = 3, then to decrease. Between x = 6 and 7, a minimum value of T-C is reached and for higher x values T-C increases again. X-ray-diffraction measurements on magnetically aligned Tm2Fe17-xGax powders show that the compounds with x less than or equal to 6 have an easy-plane type of magnetic anisotropy, whereas the compounds with x greater than or equal to 7 exhibit easy c-axis anisotropy at room temperature. All Tm2Fe17-xGax compounds exhibit a spin-reorientation transition at low temperature, except for the sample with x = 6, which shows an easy-magnetization direction perpendicular to the c axis in the temperature range from 5 to 300 K. For x less than or equal to 5, the spin-reorientation temperature is found first to increase with x and then to decrease, having a maximum value of 211 K at about x = 3. In the samples with x greater than or equal to 7, an easy-plane anisotropy was observed at low temperature, but an easy-axis preference of the magnetization at room temperature was observed. The results obtained for Tm2Fe17-xGax indicate that the mutually competing Tm- and Fe-sublattice anisotropies both change their sign with increasing Ga concentration. (C) 1998 American Institute of Physics. [S0021-8979(98)00311-9]. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36719]  |
| 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 | Shen, BG,Cheng, ZH,Wang, FW,et al. Effects of Ga substitution on structure and magnetocrystalline anisotropy of Tm2Fe17[J]. JOURNAL OF APPLIED PHYSICS,1998,83(11):5945. |
| APA | Shen, BG.,Cheng, ZH.,Wang, FW.,Yan, QW.,Tang, H.,...&Zhang, SY.(1998).Effects of Ga substitution on structure and magnetocrystalline anisotropy of Tm2Fe17.JOURNAL OF APPLIED PHYSICS,83(11),5945. |
| MLA | Shen, BG,et al."Effects of Ga substitution on structure and magnetocrystalline anisotropy of Tm2Fe17".JOURNAL OF APPLIED PHYSICS 83.11(1998):5945. |
入库方式： OAI收割
来源：物理研究所
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