Structural phase stabilization via Ba site doping with bivalent Sr, Ca and Zn ions and Fe site doping with trivalent Cr and Ga ions in the BaFe₁₂O₁₉ hexaferrite and its magnetic modification

Abstract

Lattice structure, chemical state and magnetic properties in metal doped barium hexaferrite.

Effect of ferromagnetic cobalt on characteristics of coercive Aluminium substituted BaFe11.5Al0.5O19 hexaferrites

“…According to Wang et al, replacing Sm ions produced fine powders of M-type hexa-ferrites, increasing the coercive field. The above findings encouraged us to investigate magnetic and structural changes in BaFe 11.5−x Al 0.5 Co x O 19 hexa-ferrites at various doping levels [38][39][40]. Although Ba hexaferrites are being doped with rare earth metals and transition metals for multiple applications, still, if Ba M type hexaferrites are co-doped with Al-Co having different concentrations, then it might be helpful for many applications, for example, storage devices, microwave absorption devices, magnetic sensors and recording media [4,41].…”

Effect of Ni2+and Co2+ substitution on the characteristics of the strontium aluminum hexaferrite (SrAl2Fe10O19)

“…Therefore, in the present work, the composition of Al was kept as 2 in order to achieve high coercivity with modest saturation and remanence. The element-specific doping effects either at Sr or Fe sites of the SrM structure have been studied in the literature [10][11][12][13]. This work adopted sol-gel auto-combustion treatment followed by sintering, and the properties were altered by substituting the divalent cation (Ni/Co) at the Sr site.…”