Influence of Fe2+ on microwave behaviour of M(Co, Ti)l,2 type hexaferrite C. Brard, T. Taffary, D. Autissier et F. JorionJ. Phys. IV France, 08 PR2 (1998) Pr2-401-Pr2-404DOI: https://doi.org/10.1051/jp4:1998293