节点文献

DyFe_11-xMn_xTi赝三元化合物的结构和磁性

Structure and Magnetic Properties of DyFe_11-xMn_xTi Compounds

推荐 CAJ下载
PDF下载
不支持迅雷等下载工具，请取消加速工具后下载。

【Author】 YANG Shi-qiang~1,LIN Ping-hua~3,DONG Yin-sheng~2,ZHANG Chun-lan~3,CHEN Zhen-hua~1(1.College of Materials Science & Engineering,Hunan Univ,Changsha,Hunan 410082,China;2.Dept of Materials Science & Engineering,Southeast Univ,Nanjing,Jiangsu 210096,China;3.Dept of Digital Automatization,Hunan College of Information,Changsha,Hunan 410200,China)

【机构】湖南大学材料科学与工程学院；东南大学材料科学与工程系；湖南信息职业技术学院数字自动化系；湖南大学材料科学与工程学院湖南长沙410082；江苏南京210096；湖南长沙410200；湖南长沙410082；

【摘要】研究了Mn部分替代DyFe11Ti中的Fe对化合物结构和磁性的影响.利用真空电弧熔炼和真空热处理制备了DyFe11-xMnxTi(1.0≤x≤5.0)化合物样品.X-射线衍射和热磁曲线测量表明:用Mn部分取代DyFe11Ti中的Fe仍保持ThMn12型结构,且具有较好的单相性;晶格常数a和单胞体积V随Mn含量的增加而增大;在DyFe7Mn4Ti化合物的热磁曲线上观察到了补偿点;随着Mn含量的增加,化合物在4.4 K温度下的饱和磁化强度逐渐减小,在某一成分点为零.而后随Mn含量的继续增加而增大.更多还原

【Abstract】 The effect of Mn substitution for Fe in DyFe₁₁Ti on the structure and magnetic properties was investigated.DyFe_11-xMn_xTi samples（1.0≤x≤5.0） were prepared by means of arc-melting and subsequent vacuum annealing.The structure and magnetic properties of DyFe_11-xMn_xTi compounds were investigated by X-ray powder diffraction and magnetic property measurements.The following conclusions were obtained: all the DyFe_11-xMn_xTi compounds with（1.0）≤x≤5.0 crystallized in the ThMn₁₂-type structure.The lattice constants a and the unit-cell volume V increased monotonically with the increase of Mn concentration.A compensation temperature was observed in the magnetization-temperature curve of DyFe₇Mn₄Ti compounds.With the increase of Mn concentration,the saturation magnetization at 4.4 K decreased to zero,and then continued to increase.更多还原