Title :
Magnetostriction and hysteresis for Mn substitutions in (Tbx Dy1-x)(Mn1Fe1-y)1.95
Author :
Teter, J.P. ; Clark, A.E. ; Wun-Fogle, M. ; McMasters, O.D.
Author_Institution :
US Naval Surface Warfare Center, Silver Spring, MD, USA
fDate :
9/1/1990 12:00:00 AM
Abstract :
A study of the effects of substituting small amounts of manganese for iron in the terbium-dysprosium iron2 Laves-phase intermetallic system is presented. Pseudocrystalline (twinned single-crystal) rods of Mn-substituted Terfenol-D (TbxDy1-xFe2; x=0.3, 0.4, 0.5, 0.6) were prepared by free-standing-zone methods such that the [111] crystalline directions were perpendicular to the rod axes and the [112-bar] crystalline directions were oriented along the rod axes. The magnetization and linear magnetostriction were examined as functions of temperature from zero to +90°C, compressive axial prestress from 5 to 36 MPa along the [112-bar] growth direction, and Tb-Dy ratio. From these measurements it was possible to determine the effect of Mn substitution on hysteresis, magnetic anisotropy, and saturation magnetostriction
Keywords :
dysprosium alloys; iron alloys; magnetic anisotropy; magnetic hysteresis; magnetic impurity interactions; magnetisation; magnetostriction; manganese alloys; terbium alloys; (TbxDy1-x)(Mn1Fe1-y) 1.95; 0 to 90 degC; Laves-phase intermetallic system; Mn substitutions; Tb-Dy ratio; Terfenol-D; [111] crystalline directions; [112-bar] crystalline directions; compressive axial prestress; free-standing-zone methods; hysteresis; linear magnetostriction; magnetic anisotropy; magnetization; saturation magnetostriction; twinned single-crystal; Crystallization; Iron; Magnetic anisotropy; Magnetic field measurement; Magnetic hysteresis; Magnetization; Magnetostriction; Manganese; Perpendicular magnetic anisotropy; Temperature distribution;
Journal_Title :
Magnetics, IEEE Transactions on
