Magnetic properties of hydrides of rare earth–transition metal glasses

Authors

C.G. Robbins, University of Nebraska - Lincoln
Z.D. Chen, University of Nebraska - Lincoln
J.G. Zhao, University of Nebraska - Lincoln
Michael J. O'Shea, University of Nebraska-LincolnFollow
David J. Sellmyer, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

11-1-1982

Comments

Published by American Institute of Physics. J. Applied Physics 53, 7798 (1982). ©1982 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

The effect of hydrogen on magnetic properties of metallic glasses of the form (R₈₀Ga₂₀)_1-xT_xH_y where R=Pr, Nd, Gd, Tb, Er; T=Cr, Fe, Co, B; 0≤x≤0.3 and 0≤y≤1.7 is reported. The anisotropic rare earth glasses without H all exhibit speromagnetic (spin-glass-like) transitions and the effect of hydrogen, in most cases, is to lower the peak in χ_ac significantly but leave T_C relatively unchanged. For the Gd glass with T=Fe and x=0.1 the introduction of H at the level y=0.55 causes a large decrease in T_C and a significant increase in local random anisotropy. Models for these phenomena are discussed. Journal of Applied Physics is copyrighted by The American Institute of Physics.