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优化材料性能参数和自旋阀巨磁电阻磁头的结构参数是微磁器件实用化的关键。基于建立的物理计算模型，首先利用传输线方法和微磁学理论对铁磁自由层中信号场和磁化强度分布进行了计算，优化了材料性能参数。其次讨论了磁头结构尺寸和磁参数对信号场和饱和磁感应强度的影响
The optimization of the material performance parameters and the structural parameters of the giant magnetoresistance heads of the spin valve are the key to the practical application of micromagnetic devices. Based on the established physical calculation model, the distribution of signal field and magnetization in the ferromagnetic free layer was first calculated by using the transmission line method and the micro-magnetism theory, and the material performance parameters were optimized. Secondly, the influence of the magnetic head structure and magnetic parameters on the signal field and saturation magnetic flux density