MnxFe2-xP1-yGey磁热效应材料的电子结构

来源 :第三届全国磁热效应材料和磁制冷技术学术研讨会 | 被引量 : 0次 | 上传用户：zhang444051115

【摘要】

：

MnFePGe合金在室温附近磁热效应显著,其居里温度连续可调.该类化合物为Fe2P六方结构,空间群为P-62m,Mn原子优先占据3g位置,Fe原子优先占据3f位置.随着温度的升高(TC以下)Mn原

【作者】

：

张振路刘丹敏李晖黄清镇岳明张久兴

【机构】

：

北京工业大学,100124NISTCenterforNeutronResearch,NationalInstituteofStandardsandTechnology,Maryland20899,US

【出处】

：

第三届全国磁热效应材料和磁制冷技术学术研讨会

【发表日期】

：

2014年5期

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MnFePGe合金在室温附近磁热效应显著,其居里温度连续可调.该类化合物为Fe2P六方结构,空间群为P-62m,Mn原子优先占据3g位置,Fe原子优先占据3f位置.随着温度的升高(TC以下)Mn原子的磁矩基本不变(～2.8μB),而Fe原子的磁矩逐渐减小(接近TC时迅速减小)[1].材料的磁性与电子结构有着密切的联系,本文研究了MnFePGe的电子结构对磁性的影响.

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