Nanocrystallization and Core-loss properties of Fe-rich FeSiBPNbCu nanocrystalline alloy

•25 mm melt-spun ribbon of different thickness prepared using commercial raw materials.•Ribbon thickness influences amorphous matrix structure & nanocrystallization process.•Hysteresis contribution dominates sub-kHz Core-loss properties.•Low Core Loss P ≤ 0.4 W/kg @50 Hz/1.6 T is achieved. The p...

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