Title :
New spin-valve magnetic field sensors combined with strain sensing and strain compensation
Author :
O´Handley, R.C. ; Childress, J.R.
Author_Institution :
MIT, Cambridge, MA, USA
fDate :
7/1/1995 12:00:00 AM
Abstract :
In thin film magnetic field sensors, strains adversely affect the gain and bias conditions. A new linear field sensor combining two matched spin valve elements is described. The difference signal from these two elements measures the strain at the field sensor and the sum signal, with the difference as input, gives a strain-compensated measure of the field
Keywords :
compensation; giant magnetoresistance; magnetic sensors; magnetoresistive devices; strain measurement; strain sensors; anisotropic magnetoresistance; difference signal; dual element field sensor; giant magnetoresistance effect; linear field sensor; spin-valve magnetic field sensors; strain compensation; strain sensing; Anisotropic magnetoresistance; Capacitive sensors; Giant magnetoresistance; Magnetic anisotropy; Magnetic field induced strain; Magnetic heads; Magnetic sensors; Perpendicular magnetic anisotropy; Strain measurement; Thermal stresses;
Journal_Title :
Magnetics, IEEE Transactions on
