The composite powders of barium-magnesium ferrite were prepared using sol-gel auto-combustion and microwave methods. The crystal structure and the shape of nanocomposites have been compared. X-ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Vibrating Sample Magnetometer (VSM) were used to investigate the structural, morphological and magnetic properties of nanopowder. The formatio...

Bridgmanite may contain a large proportion of ferric iron in its crystal structure the forms FeFeO3 and MgFeO2.5 components. We investigated pressure dependence contents bridgmanite coexisting with MgFe2O4-phase or without ferropericlase MgO-SiO2-Fe2O3 ternary system at 2,300 K, 33 40 GPa. Together experiments 27 GPa reported Fei et al. (2020, https://doi.org/10.1029/2019GL086296), our results ...