Structure and Magnetostrictive Properties of Tb0.2Pr0.8(Fe0.4Co0.6)1.9Bx Alloys
Crystal structure and magnetostrictive properties of Tb0.2Pr0.8(Fe0.4Co0.6)1.9Bx alloys have been investigated by means of x-ray diffraction and a standard strain technique. The matrix of Tb0.2Pr0.8(Fe0.4Co0.6)1.9 alloy consists of (Tb,Pr)(Fe,Co)2 phase with a cubic MgCu2-type structure and some amount of (Tb,Pr)(Fe,Co)3 phase with a PuNi3-type structure. The introduction of boron effectively restrains the emergence of the iron-rich phase, which can occupy either the substitutional or interstitial site in this alloy system. The single Laves phase can be obtained for the high Pr-content Tb0.2Pr0.8(Fe0.4Co0.6)1.9Bx alloys with 0.05< x ≤0.15, which have improved magnetostrictive properties as compared to the boron free material.
Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu
J. J. Liu et al., "Structure and Magnetostrictive Properties of Tb0.2Pr0.8(Fe0.4Co0.6)1.9Bx Alloys", Advanced Materials Research, Vols. 295-297, pp. 144-147, 2011