【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。更多还原

【Abstract】 Pr0.1Ce0.6Tb0.3Fe1.9-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.更多还原