A comprehensive investigation of magnetostriction optimization in Metglas 2605SA1 ribbons is performed to enhance magnetoelectric performance. We explore a range of annealing conditions to relieve remnant stress and align the magnetic domains in the Metglas, while minimizing unwanted crystallization. The magnetostriction coefficient, magnetoelectric coefficient, and magnetic domain alignment are correlated to optimize magnetoelectric performance. We report on direct magnetostriction observed by in-plane Doppler vibrometer and domain imagining using scanning electron microscopy with polarization analysis for a range of annealing conditions. We find that annealing in an oxygen-free environment at 400 °C for 30 min yields an optimal magnetoelectric coefficient, magnetostriction and magnetostriction coefficient. The optimized ribbons had a magnetostriction of 50.6 ± 0.2 μm m-1 and magnetoelectric coefficient of 79.3 ± 1.5 μm m-1 mT-1. The optimized Metglas 2605SA1 ribbons and PZT-5A (d31 mode) sensor achieves a magnetic noise floor of approximately 600 pT Hz-1/2 at 100 Hz and a magnetoelectric coefficient of 6.1 ± 0.03 MV m-1 T-1.

中文翻译：

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通过磁场退火提高 Metglas/PZT 层压板的磁电性能


对 Metglas 2605SA1 带材的磁致伸缩优化进行了全面研究，以增强磁电性能。我们探索了一系列退火条件，以减轻残余应力并对齐 Metglas 中的磁畴，同时最大限度地减少不需要的结晶。磁致伸缩系数、磁电系数和磁畴排列相互关联以优化磁电性能。我们报告了通过面内多普勒振动计观察到的直接磁致伸缩，以及使用扫描电子显微镜对一系列退火条件进行偏振分析进行的域成像。我们发现在400℃无氧环境中退火30分钟可以产生最佳的磁电系数、磁致伸缩和磁致伸缩系数。优化后的带材磁致伸缩为50.6±0.2μm·m-1，磁电系数为79.3±1.5μm·m-1·mT-1。优化的 Metglas 2605SA1 色带和 PZT-5A（d31 模式）传感器可在 100 Hz 下实现约 600 pT Hz-1/2 的磁本底噪声和 6.1 ± 0.03 MV m-1 T-1 的磁电系数。