Al K-edge XAS and 57Fe Mössbauer spectroscopy to elucidate Aluminum allocation in magnetically hard BaFe12-xAlxO19 hexaferrites

V. BILOVOL; R. MARTÍNEZ GARCÍA; M. PAGNOLA; S. FERRARI; F. MORALES; J. ZUKROWSKI; M. SIKORA

Grenoble

Workshop; Workshop on X-ray Spectroscopy of Magnetic Materials: Emerging Opportunities at the 4th Generation Synchrotrons; 2023

The magnetic properties of BaFe12O19 hexaferrite (BaM) are suitable for permanent magnets. It is well known that doping trivalent elements such as Al in hexaferrites can increase the coercivity and improve their capability for fabrication of permanent magnets. Specifically, the following system is being studied: BaFe12-xAlxO19 ferrites doped with different concentrations of Al3+ (x = 0.5, 1.0, 1.5 at. %). We hereby conducted studies on the location of aluminum ions in the crystal lattice. The effect on the magnetic order of the hexaferrite is shown.