Magnetic and reversible magnetocaloric properties of (Gd(1-x)Dy(x))(4)Co(3) ferrimagnets
文献类型：期刊论文
| 作者 | Q. Zhang ; B. Li ; X. G. Zhao ; Z. D. Zhang |
| 刊名 | Journal of Applied Physics
 |
| 出版日期 | 2009 |
| 卷号 | 105期号:5 |
| 关键词 | cobalt alloys dysprosium alloys entropy ferrimagnetic materials gadolinium alloys magnetic cooling magnetic structure magnetic transition temperature giant magnetoresistance entropy change transition refrigeration temperature compound system |
| ISSN号 | 0021-8979 |
| 中文摘要 | Magnetic properties and magnetocaloric effect of the ferrimagnetic compounds Gd(4)Co(3) and (Gd(0.9)Dy(0.1))(4)Co(3) have been studied. In Gd(4)Co(3), two successive magnetic-entropy changes occur due to a spin-reorientation transition at T(SR)=163 K and a ferrimagnetic-magnetic ordering transition at T(C)=220 K. For a field change from 0 to 5 T, -Delta S(M)(max) at T(C) is 5.74 J/kg K, the full width at half maximum (delta T(FWHM)) of the -Delta S(M) versus T curve has a high value of 131 K, and the refrigerant capacity is as high as 575 J/kg. T(C) can easily be tuned by Dy substitution for Gd and the magnetic-entropy change is increased simultaneously. -Delta S(M)(max) of (Gd(0.9)Dy(0.1))(4)Co(3) at T(C)=145 K for the same field change has increased to 8.47 J/kg K. Our studies suggest that the successive magnetic transitions could enlarge the temperature interval, which makes this type of material meaningful for magnetic refrigeration in wider temperature regions than conventional materials. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32558]  |
| 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 | Q. Zhang,B. Li,X. G. Zhao,et al. Magnetic and reversible magnetocaloric properties of (Gd(1-x)Dy(x))(4)Co(3) ferrimagnets[J]. Journal of Applied Physics,2009,105(5). |
| APA | Q. Zhang,B. Li,X. G. Zhao,&Z. D. Zhang.(2009).Magnetic and reversible magnetocaloric properties of (Gd(1-x)Dy(x))(4)Co(3) ferrimagnets.Journal of Applied Physics,105(5). |
| MLA | Q. Zhang,et al."Magnetic and reversible magnetocaloric properties of (Gd(1-x)Dy(x))(4)Co(3) ferrimagnets".Journal of Applied Physics 105.5(2009). |
入库方式： OAI收割
来源：金属研究所
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