Title :
Noise in spin-valve sensors
Author :
Hill, Ernie W. ; Nor, A.F.
Author_Institution :
Dept. of Comput. Sci., Manchester Univ., UK
fDate :
7/1/2001 12:00:00 AM
Abstract :
This work presents the results of dynamic simulations of a spin valve sensor. The model used is based on a simple two moment system with random field terms to represent thermal fluctuations. The model predicts the form of the noise output variation with bias field and the effect of applying orthogonal fields to suppress the noise spikes. The origin of the noise lies in the energy degeneracy of the system close to saturation
Keywords :
magnetic heads; magnetic noise; magnetic sensors; spin valves; bias field; dynamic simulations; energy degeneracy; noise output variation; noise spike suppression; orthogonal fields; random field terms; saturation; spin-valve sensors; thermal fluctuations; two moment system; Equations; Fluctuations; Magnetic devices; Magnetic noise; Magnetic sensors; Predictive models; Saturation magnetization; Spin valves; Strips; Thin film sensors;
Journal_Title :
Magnetics, IEEE Transactions on
