Abstract
The regulation of magnetic domains and high-frequency property in Fe20Ni80 thin films sputtered on anodic aluminum oxide (AAO) substrates with different apertures and a Si substrate were investigated. The obvious stripe domain structure was observed in FeNi thin film sputtered on AAO (pore in diameter d ~ 20 nm) substrate. The distinct cross-sectional columnar structures prepared on three different substrates and measured by scanning electron microscope were shown, which arose from different growth mechanisms on various kinds of substrates. The structure of AAO substrate could modulate the growth mechanism of thin films and the appearance of stripe domains structure. In addition, the resonant frequency was enhanced in FeNi thin film prepared on AAO (d ~ 20 nm) substrate.
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