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首页> 外文期刊>IEEE Transactions on Magnetics >Micromagnetic Model Analysis of Various Spin-Torque Oscillators With Write Head for Microwave-Assisted Magnetic Recording
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Micromagnetic Model Analysis of Various Spin-Torque Oscillators With Write Head for Microwave-Assisted Magnetic Recording

机译：带有磁记录头的各种自旋扭矩振荡器的微波辅助磁记录模型

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摘要

A micromagnetic model analysis was carried out considering two types of write heads and three types of spin-torque oscillators (STOs). For write heads, we considered a small-sized head to reduce calculation time and a large-sized head with dimensions close to commercial heads. For STOs, we used a double-layered STO with reflection spin torque, a double-layered STO with transmission spin torque, and a tri-layered STO with two spin injection layers. We also carried out micromagnetic simulations of the STOs without the write heads (isolated STO) to compare the oscillation states. It was found that, compared with isolated STOs in a uniform applied field, a larger applied field was necessary for STOs integrated into a write head. This result shows that the write head should be designed to generate a large, well-shaped gap field to ensure stable STO oscillation.
机译：考虑了两种类型的写入头和三种类型的自旋扭矩振荡器（STO）进行了微磁模型分析。对于写磁头，我们考虑了减少计算时间的小型磁头和尺寸接近商业磁头的大型磁头。对于STO，我们使用具有反射自旋扭矩的双层STO，具有透射自旋扭矩的双层STO和具有两个自旋注入层的三层STO。我们还对没有写头（隔离STO）的STO进行了微磁仿真，以比较振荡状态。已经发现，与均匀施加场中的隔离STO相比，将STO集成到写入头中需要更大的施加场。该结果表明，写入头应设计为产生较大的形状良好的间隙场，以确保稳定的STO振荡。

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