| 言語種別 | 英語 |
|---|---|
| 発行・発表の年月 | 2016 |
| 形態種別 | 国際会議論文 |
| 査読 | 査読あり |
| 標題 | Magnetocaloric effect in a cluster-glass system Ho5Pd2-xNix |
| 執筆形態 | 共著 |
| 掲載誌名 | Journal of Physics: Conference Series |
| 掲載区分 | 国外 |
| 出版社・発行元 | IOP Publishing |
| 巻・号・頁 | 683(012036) |
| 著者・共著者 | Saori Toyoizumi, Hideaki Kitazawa, Kengo Morita, Akira Tamaki |
| 概要 | In order to investigate the effect of chemical pressure on the large magnetocaloric effect in Ho5Pd2, we conducted X-ray diffracton, magnetization, and specific heat measurements on Ho5Pd2-xNix (0<=x<=1.0) rare-earth intermetallic compounds. The linear x dependence of the lattice constant a suggests that Ni is replaced widh Pd in the case of Ho5Pd2-xHix (0<=x<=0.5). The spin-glass transition temperature Tg and paramagnetic Curie temperature thetap indicate a weak oscillatory x dependence. However, the magnetic entropy change -Delta Sm and the relative cooling power (RCP) are rapidly suppressed with increasing x. These large reductions in -Delta Sm and RCP cannot be explained only in terms of normal Ruderman-Kittel-Kasuya-Yoshida (RKKY) type indirect exchange interactions. |
| DOI | 10.1088/1742-6596/683/1/012036 |