Cu-Cr co-substituted M-type barium hexaferrites, synthesized through green methods, demonstrated favorable structural, thermal, magnetic, and dielectric properties. The XRD analysis revealed the formation of M-phase and a secondary BaFe2O4 phase. Raman spectroscopy confirmed successful Cu-Cr ion substitution, maintaining hexagonal morphology. The hard magnetic nature, multi-domain structures, and low-frequency characteristics, especially in the x=0.2 composition, suggest promising applications for lossless low-frequency technologies, opening avenues for practical utilization.

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https://www.sciencedirect.com/science/article/abs/pii/S2352492823019050?via%3Dihub