合金Pr_(0.1)Ce_(0.6)Tb_(0.3)Fe_(1.9-x)B_x的结构和磁致伸缩  

Structure and magnetostriction of Pr_(0.1)Ce_(0.6)Tb_(0.3)Fe_(1.9-x)B_x alloys

作　　者：任芝[1] 李松涛[1] 刘何燕[2] 卢遵铭[2] 曹春梅[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

出　　处：《磁性材料及器件》2011年第1期10-11,15,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Pr0.1Ce0.6Tb0.3Fe1.9-xBx（x=0.00-0.20）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B含量的增加,晶格常数在x≤0.1时缓慢下降而在x〉0.1时快速下降;居里温度在x=0.1处出现峰值;B的引入导致了合金室温磁致伸缩性能的下降。Pr0.1Ce0.6Tb0.3Fe0.9 xBx alloys （x=0-0.20） were fabricated by arc-melting method. The structure, Curie temperature and magnetostriction of the alloys were investigated by means of X-ray diffraction, vibrating sample magnetometer and standard strain technique. All the samples present MgCu2-type Laves phase structure. The lattice parameter decreases slightly with x when x≤0.1, and decreases rapidly when x〉0.1 with increasing B content. Curie temperature exhibits a maximum value at x=0.1. The magnetostriction at room temperature decreases due to the addition of boron.

关 键 词：Pr0.1Ce0.6Tb0.3Fe1.9-xBx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] O482.526[电气工程—电工理论与新技术]