| Mn_(1.18)Cr_(0.02)Fe_(0.8)P_(0.95-x)Ge_xSi_(0.05)化合物的磁热效应 |
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| 引用本文： | 哈斯朝鲁,宁君,何小龙,伊日勒图,松林,特古斯,黄焦宏.Mn_(1.18)Cr_(0.02)Fe_(0.8)P_(0.95-x)Ge_xSi_(0.05)化合物的磁热效应[J].磁性材料及器件,2010,41(4):24-26,49. |
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| 作者姓名： | 哈斯朝鲁 宁君 何小龙 伊日勒图 松林 特古斯 黄焦宏 |
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| 作者单位： | 1. 内蒙古师范大学内蒙古自治区功能材料物理与化学重点实验室,内蒙古呼和浩特,010022
2. 包头稀土研究院,内蒙古包头,014030 |
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| 基金项目： | 国家自然科学基金资助项目，内蒙古自治区自然科学基金重点项目，内蒙古自治区科技规划资助项目 |
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| 摘 要： | 在氩气保护下用高能球磨和粉末烧结法制备了Mn1.18Cr0.02Fe0.8P0.95-xGexSi0.05(x=0.245,0.250,0.255,0.260)系列化合物。通过X射线衍射和磁性测量研究了样品的物相结构和磁热效应。该系列化合物结晶为Fe2P型六角结构,少量Si的添加有利于稳定Fe2P型相。热磁曲线显示该系列化合物没有热滞或具有很小的热滞。该系列化合物的居里温度随Ge含量的增加而升高,在0~1.5 T磁场下,最大等温磁熵变约为8J/kg.K。结果说明该系列化合物具有良好的室温磁热效应。
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| 关 键 词： | 磁热效应 居里温度 磁熵变 热滞 |
Magnetocaloric Effect in Mn1.18Cr0.02Fe0.8P0.95-xGexSi0.05 Compounds |
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| O Haschaolu,NING Jun,HE Xiao-long,S Yiriyoltu,SONG Lin,O Tegus,HUANG Jiao-hong.Magnetocaloric Effect in Mn1.18Cr0.02Fe0.8P0.95-xGexSi0.05 Compounds[J].Journal of Magnetic Materials and Devices,2010,41(4):24-26,49. |
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| Authors: | O Haschaolu NING Jun HE Xiao-long S Yiriyoltu SONG Lin O Tegus HUANG Jiao-hong |
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| Affiliation: | O Haschaolu1,NING Jun1,HE Xiao-long1,S Yiriyoltu1,SONG Lin1,O Tegus1,HUANG Jiao-hong2 1.Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials,Inner Mongolia Normal University,Hohhot 010022,China,2.Baotou Research Institute of Rare Earths,Baotou 014030 |
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| Abstract: | A series of Mn1.18Cr0.02Fe0.8P0.95-xGexSi0.05(x= 0.245,0.250,0.255,0.260) compounds were prepared by high-energy ball milling and solid state reaction under argon atmosphere.The structure and magnetocaloric effect in the compounds were investigated by means of X-ray diffraction and magnetic measurements.The investigated compounds crystallize in the Fe2P-type hexagonal structure,and addition of a small amount of Si is of benefit to stabilizing the Fe2P-type structure.The magnetic measurements showed that the... |
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| Keywords: | magnetocaloric effect Curie temperature magnetic entropy change thermal hysteresis |
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