MAGNETISM AND HYPERFINE FIELDS IN MELT-SPUN R-FE-B ALLOYS WITH A LOW R-CONCENTRATION (R-Y, PR, ND, GD OR DY)
文献类型：期刊论文
| 作者 | CHENG, ZH ; MAO, MX ; SUN, JJ ; SHEN, BG ; WANG, FW ; YANG, CL ; ZHANG, YD ; LI, FS |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 1995 |
| 卷号 | 7期号:11页码:2303 |
| 关键词 | SHORT-RANGE ORDER PERMANENT-MAGNETS AMORPHOUS-ALLOYS CRYSTALLINE TEMPERATURE ND4FE77B19 NMR |
| ISSN号 | 0953-8984 |
| 通讯作者 | CHENG, ZH: CHINESE ACAD SCI,INST PHYS,STATE KEY LAB MAGNET,BEIJING 100080,PEOPLES R CHINA. |
| 中文摘要 | The hyperfine fields and magnetic properties of amorphous and crystallized R(x)Nd(4-x)Fe(77.5)B(18.5) (R = Y, Pr, Gd or Dy; 0 less than or equal to x less than or equal to 4) alloys have been investigated by means of magnetization measurements, zero-field spin-echo nuclear magnetic resonance (NMR) and the Mossbauer effect (ME). It is found that the Curie temperatures of amorphous alloys change slightly on the addition of R, but the coercive fields of crystallized alloys decrease monotonically with increasing x for R = Y, Pr and Gd. A small addition of Dy increases the coercivity; full substitution of Nd by Dy leads to low coercivity owing to the formation of the magnetically soft Dy3Fe62B14. NMR, ME and x-ray diffraction indicate that the samples with R = Pr and Gd for 0 less than or equal to x less than or equal to 4 and R = Y and Dy for 0 less than or equal to x less than or equal to 2 consist of Fe3B with a body-centred tetragonal (BCT) structure and a small amount of alpha-Fe. Furthermore, the NMR results indicate that the B-11 hyperfine fields of sn Fe3B increase linearly from 25.3 kOe (34.7 MHz) to 26.3 kOe (36.0 MHz) on the addition of Dy or Gd, but that of alpha-Fe does not change with increasing R concentration; the Mossbauer spectra show that the relative intensity of the subspectrum corresponding to Fe-57 at Fe-III(8g) sites in BCT Fe3B is about 5% weaker than those of the other two, implying that about 5 at.% Fe atoms in this site are substituted by other atoms. According to this, it may be reasonable to assume that R atoms enter into BCT Fe3B. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/41545]  |
| 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 | CHENG, ZH,MAO, MX,SUN, JJ,et al. MAGNETISM AND HYPERFINE FIELDS IN MELT-SPUN R-FE-B ALLOYS WITH A LOW R-CONCENTRATION (R-Y, PR, ND, GD OR DY)[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,1995,7(11):2303. |
| APA | CHENG, ZH.,MAO, MX.,SUN, JJ.,SHEN, BG.,WANG, FW.,...&LI, FS.(1995).MAGNETISM AND HYPERFINE FIELDS IN MELT-SPUN R-FE-B ALLOYS WITH A LOW R-CONCENTRATION (R-Y, PR, ND, GD OR DY).JOURNAL OF PHYSICS-CONDENSED MATTER,7(11),2303. |
| MLA | CHENG, ZH,et al."MAGNETISM AND HYPERFINE FIELDS IN MELT-SPUN R-FE-B ALLOYS WITH A LOW R-CONCENTRATION (R-Y, PR, ND, GD OR DY)".JOURNAL OF PHYSICS-CONDENSED MATTER 7.11(1995):2303. |
入库方式： OAI收割
来源：物理研究所
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