Magnetic ordering and exchange interaction of Laves compounds Sm(0.9)Pr(0.1)(Fe(1-x)Co(x))(2)
文献类型：期刊论文
| 作者 | Z. J. Guo ; Z. D. Zhang ; X. G. Zhao ; X. P. Song ; B. W. Wang ; X. M. Jin ; D. Y. Geng |
| 刊名 | Journal of Materials Science & Technology
 |
| 出版日期 | 2002 |
| 卷号 | 18期号:3页码:219-224 |
| 关键词 | Sm(0.9)Pr(0.1)(Fe(1-x)Co(x))(2) magnetic ordering exchange interaction phase intermetallic compounds rare-earth magnetoelastic properties giant magnetostriction hyperfine interactions electrical-properties spin reorientation single crystals anisotropy iron |
| ISSN号 | 1005-0302 |
| 中文摘要 | Structure, magnetic properties and magnetostriction of Sm(0.9)Pr(0.1)(Fe(1-x)Co(x))(2) compounds have been investigated by means of X-ray diffraction, a.c. initial susceptibility, extracting sample magnetometer, Mossbauer Spectroscopy and standard strain gauge techniques. The lattice parameter a of the MgCu(2)-type Laves compounds Sm(0.9)Pr(0.1)(Fe(1-x)Co(x))(2) decreases nonlinearly with increasing Co concentration, deviating from the Vegard's law. Curie temperature T, increases initially from 668 K for x=0 to 694 K for x=0.2 and then decreases to 200 K for x=1.0. The saturation magnetization M. at temperatures 1.5 K, 77 K and 300 K have the same variation tendency as the composition dependence of Curie temperature, in consistence with rigid-band model. The easy magnetization direction (EMD) of Sm(0.9)Pr(0.1)(Fe(1-x)Co(x))(2) lies along [111] direction in the range xless than or equal to0.6, and changes to [110] for x=0.8, while Sm(0.9)Pr(0.1)Co(2) stays in the paramagnetic state at room temperature. The composition dependence of the average hyperfine field, H(hf), demonstrates a similar variation tendency as that of the saturation magnetization M(s) and Curie temperature T(c). The spontaneous magnetostricton lambda(111) increases with increasing Co content. The saturation magnetostriction lambda(s) decreases monotonically with increasing x, which is caused by the increase of magnetostriction constant lambda(100) with opposite sign to that of lambda(111). A two-sublattice model has been proposed to understand the intermediate region between the [111] and [110] spin configurations, which can also be used to explain the temperature dependence of magnetization. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36280]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Z. J. Guo,Z. D. Zhang,X. G. Zhao,et al. Magnetic ordering and exchange interaction of Laves compounds Sm(0.9)Pr(0.1)(Fe(1-x)Co(x))(2)[J]. Journal of Materials Science & Technology,2002,18(3):219-224. |
| APA | Z. J. Guo.,Z. D. Zhang.,X. G. Zhao.,X. P. Song.,B. W. Wang.,...&D. Y. Geng.(2002).Magnetic ordering and exchange interaction of Laves compounds Sm(0.9)Pr(0.1)(Fe(1-x)Co(x))(2).Journal of Materials Science & Technology,18(3),219-224. |
| MLA | Z. J. Guo,et al."Magnetic ordering and exchange interaction of Laves compounds Sm(0.9)Pr(0.1)(Fe(1-x)Co(x))(2)".Journal of Materials Science & Technology 18.3(2002):219-224. |
入库方式： OAI收割
来源：金属研究所
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