偏置磁场对自旋阀传感器性能的影响研究

摘要

Effects of perpendicular bias magnetic fields on hysteresis,non-linearity and sensitivity of spin-valve sensors are investigated by testing the magnetic response(MR)curves while perpendicularly apply bias magnetic field to sensitive axis. It is found that the hysteresis,non-linearity and sensitivity all decrease with increasing bias field,and sensitivity is inversely proportional to the bias field. The research results can offer the theoretical support for application of spin valve sensors.%通过测试自旋阀传感器在沿垂直于敏感轴方向施加偏置磁场条件下的磁场响应曲线,研究了偏置磁场对自旋阀传感器磁滞、非线性度和灵敏度等性能参数的影响.实验结果表明:随着偏置磁场的增加,自旋阀传感器的磁滞、非线性度和灵敏度均减小,并且灵敏度与偏置磁场大小成反比关系.研究结果可为自旋阀传感器的应用提供理论支撑.