自旋阀多层膜巨磁电阻的研制

阐述了多层膜巨磁电阻自旋阀的设计原理和采用金属掩膜版磁控溅射的方法研制多层膜巨磁电阻自旋阀的工艺.制造的多层膜巨磁电阻采用Co/Cu/Co]三重结构.同时分析了制备的Cu、Co纳米膜的形貌以及利用自旋阀GMR传感器测试得到的实验校准数据并绘制出输出-输入曲线.实验结果表明,制造的巨磁电阻提高了低场下的磁灵敏度,可以用来检测不同方位地磁场的大小,用该方法制造巨磁电阻的迟滞为0.01%F.S.文中介绍的多层膜巨磁电阻制造方法具有工艺简单、可与IC工艺相兼容的优点,有推广应用前景.

Research Fabrication of spinning valve multilayer membrane GMR

This paper expatiates on the fabrication of the Spinning Valve based on the multilayer membrane Giant Magnetoresistance (GMR) theory,which involving the metal mask and the R.F magnetron sputtering technology in the process. The Co/Cu/Co] structure features largely in the GMR we manufactured. We provide the SEM photos showing the surface structure of the samples , and also the testing data plot of that GMR sensor. The experimental results indicate that the GMR possessing relatively high magnetism sensitivity can be used even to measure the change of the geomagnetism. The positive and negative trip measuring error is 0.01%F.S for that GMR. The technology focused for the fabrication of GMR is simple and convenient, especially goes well with the ICs technology. It can be used widely in variety of application aspects.