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Degrees of interest in multiferroic materials have been arising since the 1950s, owing to the discovery of the coexistence and mutual control of magnetic and electrical properties for the potential future energy-efficient devices, such as spintronic devices and sensors. [1][2][3][4][5][6][7][8] Hexaferrites, as a kind of magnetic insulator, are characterized by a long-wavelength magnetic structure with a high magnetic ordering temperature. These materials have evolved as a popular multiferroics material for their excellent ferromagnetic properties with