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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Effect of thermal treatment on high-frequency magneto-impedance in ferromagnetic/Cu/ferromagnetic trilayers
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Effect of thermal treatment on high-frequency magneto-impedance in ferromagnetic/Cu/ferromagnetic trilayers

机译：热处理对铁磁/铜/铁磁三层高频磁阻的影响

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摘要

Ferromagnetic/Cu/ferromagnetic trilayers (FM/Cu/FM) have been produced by sputtering (FM = CoFeSiB or FeSiB, thickness 80-500 nm). The Cu layer, longer than the two FM layers, is connected to a strip line attached to a network analyzer (frequency interval 30 kHz-6 GHz). The variation of the characteristic impedance of the line with a static magnetic defines the giant magneto-impedance (GMI) ratio. Trilayers have been annealed in furnace, with and without a magnetic field (aimed to induce a magnetic anisotropy). The effect on GMI of the FM material composition, thickness and annealing has been studied. In general, transverse annealing improves the GMI response of the device, whereas longitudinal annealing on CoFeSiB-based trilayers does not improve the GMI response, but reduces the field value at which peak GMI effect is observed.
机译：铁磁性/铜/铁磁性三层（FM / Cu / FM）已通过溅射法制成（FM = CoFeSiB或FeSiB，厚度为80-500 nm）。比两个FM层长的Cu层连接到连接到网络分析仪的带状线（频率间隔30 kHz-6 GHz）。带有静磁场的线路的特征阻抗的变化定义了巨磁阻抗（GMI）比。三层陶瓷在有和没有磁场的情况下在炉中退火（旨在引起磁各向异性）。已经研究了FM材料成分，厚度和退火对GMI的影响。通常，横向退火可改善器件的GMI响应，而在基于CoFeSiB的三层上进行纵向退火则不会提高GMI响应，但会减小观察到峰值GMI效应的场值。

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