Title :
Apparatus for magnetic measurements under biaxial stress
Author :
Pearson, J. ; Squire, P.T. ; Maylin, M.G. ; Gore, J.G.
Author_Institution :
Dept. of Phys., Bath Univ., UK
fDate :
9/1/2000 12:00:00 AM
Abstract :
Apparatus for observing the effects of biaxial stress on discs of soft ferromagnetic materials is described. The apparatus is optimized for fundamental studies of stress-induced magnetization changes and the stress dependence of hysteresis parameters. Out-of-plane anisotropy is minimized by the use of a novel method of measuring the magnetization, based on a Hall probe near the surface. The system currently operates with applied fields up to 30 kA/m and stress magnitudes in orthogonal directions up to 50 MPa. Illustrative results for the isofield stress-induced irreversible magnetization changes in pure iron are presented in the form of contour plots
Keywords :
Hall effect transducers; coils; ferromagnetic materials; iron; magnetic anisotropy; magnetic hysteresis; magnetic sensors; magnetic variables measurement; nondestructive testing; soft magnetic materials; stress effects; 50 MPa; Fe; Hall probe; NDE; biaxial stress effects; contour plots; field coils; hysteresis parameters; irreversible magnetization changes; isofield stress-induced changes; magnetic measurement apparatus; minimized out-of-plane anisotropy; pure iron; remote coils; soft ferromagnetic material discs; stress dependence; stress-induced magnetization changes; Anisotropic magnetoresistance; Coils; Magnetic anisotropy; Magnetic hysteresis; Magnetic materials; Magnetic variables measurement; Magnetization; Perpendicular magnetic anisotropy; Steel; Stress;
Journal_Title :
Magnetics, IEEE Transactions on
