Study of Signal and Noise in GMR Sensors with Spin Valve Configuration
This article is mainly focus on GMR devices response to the outside magnetic field, including the influence on noise power spectral and magnetoresistance effect. Besides, interracial exchange coupling effects have also been simulated and a gradient in the exchange field has been found. Furthermore, noise power and magnetoresistance decrease slightly when the bias field increases, which indicates that devices noise and magnetoresistance effect may have the similar source. Through studying the origins of the two, we propose that spin transfer torque effect contributes a lot to the noise.
GMR l/f noise magnetoresistance effect
W.Y.Li B.Lei X.M.Cheng
Department of Electronic Science and Technology,Huazhong University of Science and Technology,Wuhan 430074,Hubei China
国际会议
The 10th International Conference on Ferrites(2008中国国际铁氧体研讨会)
成都
英文
51-54
2008-10-10（万方平台首次上网日期，不代表论文的发表时间）