Syntheses, crystal structure and magnetic properties of Rm+nCo5m+3nB2n
文献类型：期刊论文
| 作者 | J. K. Liang ; Y. Chen ; X. L. Chen |
| 刊名 | Progress in Natural Science
 |
| 出版日期 | 2001 |
| 卷号 | 11期号:12页码:881-892 |
| 关键词 | R-Co-B ternary systems R3Co13B2 P5Co19B6 crystal structure magnetic properties co-b phase relation permanent-magnets nd borides sm gd fe |
| ISSN号 | 1002-0071 |
| 中文摘要 | The phase relations at the 600 degreesC and 700 degreesC isothermal sections of the ternary systems R-Co-B for R Nd, Pr and R = Sm, Cd respectively were summarized in this paper. For Rm+nCo5m+3nB2n, two new types of compounds R3Co13B2 ( R = Pr, Nd, Sm, Gd, Dy, Ho, Er, Y) (m = 2, n = 1) and R5Co19B6 (R = Pr, Nd) (m = 2, n = 3) were synthesized by utilizing the principle of structural combination. Their crystal* structures and easy magnetization direction were determined by X-ray powder diffraction, and structures were refined by the Rietveld method. The Curie temperature T-C, saturation magnetization M-s and anisotropic field H-A of the new compounds were measured using a vibrating-sample magnetometer, an extraction sample magnetometer and M(H) - H curves of samples in different magnetization directions respectively. The T-C and M-s of Rm+nCo5m+3nB2n increase with increasing values of m at a given n value. H-A increases with an increase in n when m is kept invariable. The effects of the substitution of Ni for Co on the magnetic properties of Nd13Co15-xNixB2 were also investigated. It was found that T-SR decreased monotonously as the concentration of Ni increased, and at x = 3 the easy magnetization direction becomes axial at room temperature. The relations between crystal structure and magnetic properties of Rm+nCo5m+3nB2n and the possible routes of synthesizing permanent magnetic materials are also discussed. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36711]  |
| 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 | J. K. Liang,Y. Chen,X. L. Chen. Syntheses, crystal structure and magnetic properties of Rm+nCo5m+3nB2n[J]. Progress in Natural Science,2001,11(12):881-892. |
| APA | J. K. Liang,Y. Chen,&X. L. Chen.(2001).Syntheses, crystal structure and magnetic properties of Rm+nCo5m+3nB2n.Progress in Natural Science,11(12),881-892. |
| MLA | J. K. Liang,et al."Syntheses, crystal structure and magnetic properties of Rm+nCo5m+3nB2n".Progress in Natural Science 11.12(2001):881-892. |
入库方式： OAI收割
来源：金属研究所
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