PROPERTIES OF M-TYPE BARIUM FERRITE DOPED BY SELECTED IONS

Jozef Sláma – Anna Grusková – Mária Papánová – Darina Kevická – Vladimír Jančárik
– Rastislav Dosoudil – Guillermo Mendoza-Suárez – Alvaro González-Angeles

   The magnetic and structural properties of the samples substituted Ba hexaferrite M-type with BaFe_12-2x(Me₁- Me₂)_xO₁₉ composition, where Me₁=Zn, Co, Ni, and Me₂=Zr, Ti, were compared. The powder samples with 0.0 ≤ x ≤ 0.6 were prepared by two processing routes. Different Fe/Ba ratio was used for mechanical alloying (Fe/Ba=10.0) and for the citrate precursor method (Fe/Ba=10.8). Magnetic properties were studied by both vibrating sample magnetometry and thermomagnetic analysis. The ferrite formation process was followed by Mössbauer spectroscopy.

Keywords: substituted hexagonal ferrite, organometallic precursor, mechanical alloying, magnetic properties

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