| MnBi1-xCrx(x=0.04,0.08,0.12,0.16)合金的晶体结构与磁性能 |
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| 引用本文： | 黄国任,黄金辉,杨通晗,王涛,何维.MnBi1-xCrx(x=0.04,0.08,0.12,0.16)合金的晶体结构与磁性能[J].广西科学,2019,26(4):378-384. |
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| 作者姓名： | 黄国任 黄金辉 杨通晗 王涛 何维 |
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| 作者单位： | 广西大学资源环境与材料学院,广西有色金属及特色材料加工重点实验室,广西南宁 530004;广西大学资源环境与材料学院,广西有色金属及特色材料加工重点实验室,广西南宁 530004;广西大学资源环境与材料学院,广西有色金属及特色材料加工重点实验室,广西南宁 530004;广西大学资源环境与材料学院,广西有色金属及特色材料加工重点实验室,广西南宁 530004;广西大学资源环境与材料学院,广西有色金属及特色材料加工重点实验室,广西南宁 530004 |
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| 基金项目： | 国家自然科学基金项目（51861003）资助。 |
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| 摘 要： | 本研究采用真空电弧熔炼法制备了MnBi_(1-x)Cr_x(x=0.04,0.08,0.12,0.16)系列合金,利用X射线衍射仪(XRD)、Rietveld全谱拟合和振动样品磁强计(VSM)研究和测定MnBi_(1-x)Cr_x系列合金样品的晶体结构和磁性能。结果发现,退火后的样品主相是低温相(LTP)MnBi(空间群:P6_3/mmc(194))。Rietveld全谱拟合分析确定每个样品中各相的含量并解析出主相MnBi_(1-x)Cr_x的晶体结构。M(M=Bi,Cr)原子之间的原子间距d_(M-M)随着掺杂量增大而增大。M原子与Mn原子的间距d_(M-Mn)随着掺杂量增大而减小。在400K时趋于饱和,且在掺杂量小于x=0.12时,饱和磁化强度随着掺杂量的增加而增大,在掺杂量大于x=0.12时,饱和磁化强度已经达到饱和,为20.55emμ/g,且不随掺杂含量的变化而变化。随着Cr含量的增加,矫顽力亦逐渐增加,并且在掺杂量为x=0.12时达到最大值。随着测试温度的上升,合金矫顽力均呈上升趋势。MnBi_(1-x)Cr_x(x=0.04,0.08,0.12,0.16)的德拜温度分别为378.46K,369.52K,354.62K和351.64K。
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| 关 键 词： | MnBi掺杂 Rietveld全谱拟合 晶体结构 磁性能 |
Crystal Structure and Magnetic Properties of MnBi1-xCrx(x=0.04, 0.08, 0.12, 0.16) |
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| HUANG Guoren,HUANG Jinhui,YANG Tonghan,WANG Tao and HE Wei.Crystal Structure and Magnetic Properties of MnBi1-xCrx(x=0.04, 0.08, 0.12, 0.16)[J].Guangxi Sciences,2019,26(4):378-384. |
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| Authors: | HUANG Guoren HUANG Jinhui YANG Tonghan WANG Tao and HE Wei |
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| Institution: | Guangxi Key Laboratory of Processing for Non-ferrous Metallic and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi, 530004, China,Guangxi Key Laboratory of Processing for Non-ferrous Metallic and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi, 530004, China,Guangxi Key Laboratory of Processing for Non-ferrous Metallic and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi, 530004, China,Guangxi Key Laboratory of Processing for Non-ferrous Metallic and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi, 530004, China and Guangxi Key Laboratory of Processing for Non-ferrous Metallic and Featured Materials, School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi, 530004, China |
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| Abstract: | |
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| Keywords: | MnBi doping Rietveld crystal structure magnetic properties |
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