Title :
Magnetomechanical properties of single crystal TbxDy1-x under compressive stress
Author :
Clark, A.E. ; Wun-Fogle, M. ; Restorff, J.B. ; Lindberg, Jan F.
Author_Institution :
US Naval Surface Warfare Center, Silver Spring, MD, USA
fDate :
9/1/1992 12:00:00 AM
Abstract :
The magnetic and magnetostrictive properties of the TbxDy1-x highly magnetostrictive alloys were measured in the region of large magnetostriction to anisotropy ratios ( x=0.5, 0.6, and 0.67). Magnetizations and magnetostrictions under compressive stresses up to 25 MPa and fields up to 2 kOe were compared to theoretical curves. Field dependences clearly display magnetization discontinuities and magnetic rotation regions. From these data and from corresponding elastic modulus measurements, permeabilities, piezomagnetic d-constants (d33 ), and elastic compliances were calculated. For some values of stress and magnetic field, ΔE effects >10 and coupling factors (k33) approach unity
Keywords :
dysprosium alloys; elastic moduli; ferromagnetic properties of substances; magnetic permeability; magnetisation; magnetoelastic effects; magnetostriction; terbium alloys; TbxDy1-x; compressive stress; coupling factors; elastic compliances; elastic modulus; highly magnetostrictive alloys; magnetic rotation regions; magnetization discontinuities; magnetostrictive properties; permeabilities; piezomagnetic d-constants; Anisotropic magnetoresistance; Compressive stress; Displays; Magnetic anisotropy; Magnetic field measurement; Magnetic properties; Magnetoelasticity; Magnetostriction; Permeability measurement; Perpendicular magnetic anisotropy;
Journal_Title :
Magnetics, IEEE Transactions on
