Influence of H and Extra La on Magnetocaloric Effect of La0.5+xPr0.5Fe11.4Si1.6 Melt-Spun Ribbons
文献类型：会议论文
| 作者 | Liu, J. J.; Bian, B. R.; Han, X. H.; Nie, J. W.; Yan, A. R.; Du, J. |
| 出版日期 | 2011 |
| 会议日期 | APR 25-29, 2011 |
| 关键词 | MAGNETIC ENTROPY CHANGE METAMAGNETIC TRANSITION EXCHANGE INTERACTIONS EXPANSION |
| 卷号 | 47 |
| 期号 | 10 |
| DOI | 10.1109/TMAG.2011.2147295 |
| 英文摘要 | Magnetic properties and magnetocaloric effect were investigated on La0.5+xPr0.5Fe11.4Si1.6Hy melt-spun ribbons. It was found that NaZn13-type phase could be obtained easily owing to that the segregation of alpha-Fe phase was suppressed obviously by adding appropriate amount of La after a short time annealing for melt-spun ribbons. For the La0.6Pr0.5Fe11.4Si1.6Hy ribbons, the Curie temperature was adjusted dramatically from low temperature of 193 K to room temperature of 321 K due to the interstitial hydrogen adsorption. With La content increasing, Curie temperature was slightly increased; the magnetic hysteresis was reduced, while a large magnetic entropy change remained. The maximum magnetic entropy change (-Delta S-M) is 33.8 J/(kg.K) for La0.6Pr0.5Fe11.4Si1.6 while that of La0.6Pr0.5Fe11.4Si1.6Hy is 19.6 J/(kg.K) in a magnetic field change of 5 T. It is shown that rapid quenching to make LaFe13-xSix alloys is more cost effective than arc melting method by reducing annealing time substantially. High magnetic entropy change and low magnetic hysteresis were obtained by adding extra La and the Curie temperature was tuned to near room temperature by interstitial atom H. This work indicated that La0.6Pr0.5Fe11.4Si1.6Hy was a promising magnetic refrigeration material near room temperature. |
| 学科主题 | Engineering ; Physics |
| ISSN号 | 0018-9464 |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/23679]  |
| 专题 | 会议专题 会议专题_会议论文 |
| 推荐引用方式 GB/T 7714 | Liu, J. J.,Bian, B. R.,Han, X. H.,et al. Influence of H and Extra La on Magnetocaloric Effect of La0.5+xPr0.5Fe11.4Si1.6 Melt-Spun Ribbons[C]. 见:. APR 25-29, 2011. |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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