Investigation of Microstructural and Magnetic Properties of BaVxFe12−xO19 Nanohexaferrites.

Nanohexaferrites of BaV_xFe_12−xO₁₉ (0.0 ≤ x ≤ 0.1) were prepared using sol–gel auto-combustion. The structure and morphology of BaV_xFe_12−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 BaV_0.04Fe_11.96O₁₉ (x = 0.04) nanohexaferrites, showing the strengthening of magnetic properties. [ABSTRACT FROM AUTHOR]