Investigation of Microstructural and Magnetic Properties of BaVxFe12-xO19 Nanohexaferrites

Nanohexaferrites of BaVxFe12-xO19 (0.0 x 0.1) were prepared using sol-gel auto-combustion. The structure and morphology of BaVxFe12-xO19 (0.0 x 0.1) nano-sized hexaferrites were explored by X-ray diffraction (XRD), scanning electron microscopy (SEM) coupled with EDXS. XRD analysis indicated particle size in the 55-60-nm interval. SEM and EDXS investigations confirmed the formation of the desired composition of V-substituted Ba-hexaferrites. The magnetic properties of products were studied. The magnetic M(H) hysteresis loops revealed that all produced nanohexaferrites display ferromagnetic-like comportment. The deduced saturation magnetization (M-s), retentivity (M-r), magneto-crystalline anisotropy fields (H-a), and coercive field (H-c) were enhanced for low V3+ contents and were maximum for BaV0.04Fe11.96O19 (x = 0.04) nanohexaferrites, showing the strengthening of magnetic properties.