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  • Hoez, Antoine; Chevalier, Alexis; Mattei, Jean-Luc

    2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers)
    Conference Proceeding

    M-type hexagonal barium ferrites Ba(M x Ti x )Fe 12−2x O 19 (M=Co or Ti, x=0-0.5) are synthesized by chemical topotactical reaction. Both randomly oriented and self-polarized samples are prepared. Experimental values of the anisotropy fields, first and second anisotropy constants, and remanent magnetizations are extracted by combining hysteresis loops and microwave measurements. A salient result of this study is that, comparing with K1, K2 cannot be disregarded for these co-doped BaM hexaferrites, even at low doping levels. Results show that the compositions Ba(CoxTix)Fe12−2xO19 are more suitable for microwave applications that operate at frequencies between 30GHz and 40GHz.