材料期刊网

Single-phase Tb(1-x)Pr(x)(Fe(0.4)Co(0.6))(1.9)B(0.1)(0 <= x <= 1) compounds have been synthesized by arc melting and subsequent annealing at ambient pressure. The lattice parameter increases while the Curie temperature decreases linearly with increasing Pr content. The saturation magnetization at 5 and 295 K of the Tb(1-x) Pr(x)(Fe(0.4)Co(0.6))(1.9)B(0.1) compounds decreases when x <= 0.5, then increases with further increasing x. The smallest magnetostriction at room temperature (RT) for Tb(0.5)Pr(0.5)(Fe(0.4)Co(0.6))(1.9)B(0.1) is attributed to its total rare-earth moment which is close to zero, due to the antiparallel alignment of the Pr and Tb moments. The normalized RT magnetization and magnetostriction show that Tb(0.2)Pr(0.8)(Fe(0.4)Co(0.6))(1.9)B(0.1) has the smallest anisotropy, which agrees with the easy magnetization direction along < 1 1 1 > for the compounds with x <= 0.8, but along < 1 1 0 > for the compounds with x = 0.9 and 1.0.