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 BaFe12-2x(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