合金Pr_(0.15)Tb_(0.30)Dy_(0.55)Fe_(1.85)C_x的结构和磁致伸缩  

Structure and Magnetostriction of Pr_(0.15)Tb_(0.30)Dy_(0.55)Fe_(1.85)C_x Alloys

作　　者：任芝[1] 李松涛[1] 刘何燕[2] 卢遵铭[2] 安莉[3] 张慧鹏[1] 李养贤[2] 

机构地区：[1]华北电力大学数理学院,河北保定071003 [2]河北工业大学材料科学与工程学院,天津300130 [3]河北工业大学理学院,天津300130

出　　处：《磁性材料及器件》2010年第5期24-26,共3页Journal of Magnetic Materials and Devices

基　　金：华北电力大学科研基金资助项目(200912005);中央高校基本科研业务专项资金资助项目(09ML56)

摘　　要：用电弧炉熔炼法制备了Pr0．15Tb0．30Dy0.55Fe1．85Cx（x=0．0～0．1）合金。分别采用X射线衍射（XRD）、振动样品磁强计（VSM）和应变仪分析了合金的结构、居里温度和磁致伸缩。研究发现，所有样品均呈现单一MgCu2型Laves相结构；随C含量的增加，晶格常数增大、居里温度增高；C元素的引入，对合金的磁致伸缩和磁晶各向异性能产生了一定的影响。Pr0.15Tb0.30Dy0.55Fe1.85Cx alloys （x=0.0-0.1） were fabricated by arc-melting method. The structure, Curie temperature and magnetostriction of compounds were investigated by means of X-ray diffraction, vibrating sample magnetometer and standard strain technique. All the samples show entirely MgCu2-type Laves phase structure. The lattice parameter and the Curie temperature increase with increasing C content. The magnetostrietion at room temperature and the crystal anisotropy energy are affected modestly by the addition of Carbon.

关 键 词：Pr0.15Tb0.30Dy0.55Fe1.85Cx合金 晶格常数 居里温度 磁致伸缩 

分 类 号：TM274[一般工业技术—材料科学与工程]