| Ce2-xDyxFe17合金的磁熵研究 |
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| 引用本文： | 陈 鹏,王敦辉,唐少龙,沈亚涛,都有为.Ce2-xDyxFe17合金的磁熵研究[J].物理学报,1999,48(13):121-125. |
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| 作者姓名： | 陈 鹏 王敦辉 唐少龙 沈亚涛 都有为 |
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| 作者单位： | 南京大学物理系，固体微结构物理国家重点实验室，南京 210093；西南师范大学物理系，重庆 400715;南京大学物理系，固体微结构物理国家重点实验室，南京 210093;南京大学物理系，固体微结构物理国家重点实验室，南京 210093;南京大学物理系，固体微结构物理国家重点实验室，南京 210093;南京大学物理系，固体微结构物理国家重点实验室，南京 210093 |
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| 基金项目： | 国家自然科学基金（批准号：19974032）和国家攀登计划（纳米材料科学）（批准号：NMS-07）资助的课题. |
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| 摘 要： | 研究了Ce2-xDyxFe17(x=0.0,0.3,0.5,1.0)系列合金在77—298K温区范围磁熵变，发现Ce2-xDyxFe17系列合金有较大的磁熵变，居里温度可通过离子替代而改变，是一种可供选择的室温磁致冷材料.
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| 收稿时间： | 1999-07-20 |
A Magnetocaloric Study of Alloy Ce2-xDyxFe17 |
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| Chen Peng,Wang Dun-Hui,Tang Shao-Long,Shen Ya-Tao and Du You-Wei.A Magnetocaloric Study of Alloy Ce2-xDyxFe17[J].Acta Physica Sinica,1999,48(13):121-125. |
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| Authors: | Chen Peng Wang Dun-Hui Tang Shao-Long Shen Ya-Tao and Du You-Wei |
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| Abstract: | A series of alloys Ce2-xDyxFe17 over a composition range (x=0.0,0.3,0.5,1.0) were prepared from high-purity Ce, Dy and Fe by arc melting under purified argon atmosphere on a watercooled copper crucible, then annealed in vacuum at 900K for 30h. The X-ray diffraction pattern indicated that these alloys were single phase of Th2Ni17 type. Magnetization isotherms of these alloys were measured at temperatures between 77 and 300K under a magnetic field up to 1.4T, using vibrating sample magnetometer. We found that magnetic entropy change of Ce2-xDyxFe17(x=0.0,0.3,0.5) were 1.67, 1.41 and 1.18J/kgK, for x=0.0, 0.3 and 0.5 respectively. |
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