Heterovalent substituted BaFe12-xSnxO19 (0.1≤ x ≤1.2) M-type hexaferrite: Chemical composition, phase separation, magnetic properties and electrodynamics features

•Correlation of Sn-content in BaM hexaferrites, phase composition and MW properties was observed.•Impact of heterovalent substitution on Ms and Hc was discussed.•High electromagnetic absorption was achieved in 2–4 GHz frequency range.•More than 99.9% of the incoming electromagnetic radiation was abs...

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