Magnetostrictive properties of Tbx(Pr0.5Nd0.5)1−xFe1.93 cubic Laves alloys

• Published in: Journal of alloys and compounds Vol. 581; pp. 753 - 756
• Main Authors: Shi, Y.G., Zhou, X.G., Hu, C.C., Shi, D.N., Lv, L.Y., Tang, S.L.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 25.12.2013; Elsevier
• Subjects: Annealing; Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Heat treatment; High-pressure annealing; Magnetic properties; Magnetic properties and materials; Magnetomechanical and magnetoelectric effects, magnetostriction; Magnetostriction; Metals. Metallurgy; MgCu2-type structure; Physics; Production techniques; MgCu2-type structure; Magnetostriction; High-pressure annealing; Magnetic properties; Cubic lattices; Annealing; Intermetallic compound; type structure; Polycrystal; MgCu; High pressure; Arc furnace; Anisotropy; Laves phase; Magnetic structure
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2013.07.083

•High-(Pr,Nd) content Tbx(Pr0.5Nd0.5)1−xFe1.93 cubic Laves alloys were synthesized.•High-pressure annealing could stabilize RFe2 phase and eliminate other phases.•The magnetic anisotropy reaches a minimum at the composition with x=0.1.•Large magnetostriction 936ppm at 5kOe was obtained in Tb0.1(Pr0.5Nd0.5)0.9Fe1.93. Polycrystalline Tbx(Pr0.5Nd0.5)1−xFe1.93(0.0⩽x⩽0.4) cubic Laves alloys were synthesized by arc-melting and subsequent high-pressure annealing. The structure, magnetic properties and magnetostriction of the alloys were investigated. These alloys exhibit single cubic Laves phase with MgCu2-type structure due to the effects of high-pressure annealing. The absolute value of the first anisotropy constant |K1| decreases with increasing Tb content to a minimum at x=0.1 and then increases with further increase in x. The magnetostriction λa=λ‖-λ⊥ of the sample with x=0.1 is much larger and easier to get saturation than the others. In addition, the large ratio between magnetostriction and the absolute values of the first anisotropy constant λa/|K1| appears at the sample with x=0.1, which may make it a potential material for magnetostrictive application.