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Optimizing annealing conditions to enhance microwave absorption in FeSiB amorphous alloy powder
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DOI：10.1016/j.jallcom.2026.190276.png)
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Abstract
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• FeSiB powders annealed at 250–450 °C. Annealing at 250 °C relieves stress and retains amorphous structure. • RLmin of −46.5 dB at 1.5 mm with EAB of 6.08 GHz in 2–18 GHz. • Magnetic (natural resonance) and dielectric (dipolar/interfacial) losses give impedance matching (|Zin/Z0| ≈ 1). • Simple annealing strategy achieves high performance without complex composites.
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