Study of structural, morphological and magnetic properties of Ba0.5Sr0.5Fe12O19

Abstract

Single-phase barium Strontium hexaferrite (Ba 0.5 Sr 0.5 Fe 12 O 19 -BSF) was synthesized by sol-gel method using metal nitrates as source and D-Fructose as a fuel. The phase formation, surface morphology and magnetic properties of the samples were analyzed by X-ray Diffraction, High-resolution Scanning Electron Microscope (HR-SEM) and Vibrating Sample Magnetometer (VSM). X-ray analysis indicates that the sintered samples were remained in hexagonal structure. The densities of the sintered samples at 1,150°C were found to be 93% of theoretical density. HR-SEM and VSM studies reveal that the sintered samples were resulted in hexagonal structure with good magnetic properties. The average diagonal of the grains varies from 0.95 to 1.7 lm. The thermal treatment effects the growth of the hexagonal grains of ferrites.

Sintering temperature dependence of optimized microstructure formation of BaFe12O19 using sol–gel method

“…The size of the grains in the ceramics also grow gradually as the sintering temperature increased. The dense barium hexaferrite ceramic with a homogenous grain diagonal about *5-7 lm were obtained when being sintered at 1,150°C for 3 h. This result consistent with previously reported work [22,23]. The control of sintering temperatures and duration of the process is thus important in hard ferrite fabrication [24].…”

Microstructures and Properties of 3Y‐TZP/Ba0.5Sr0.5Fe12O19 Composites Prepared by Two Methods

“…The microstructures and mechanical and electromagnetic properties of 3Y‐TZP/Ba 0.5 Sr 0.5 Fe 12 O 19 composites prepared by two methods are investigated in this work. The Ba 0.5 Sr 0.5 Fe 12 O 19 is chosen as a second phase and is expected to modify the magnetic properties of the BaFe 12 O 19 . Two methods are adopted and compared to obtain the composites with fine and homogeneously dispersed grains of the second phase.…”

“…The Ba 0.5 Sr 0.5 Fe 12 O 19 is chosen as a second phase and is expected to modify the magnetic properties of the BaFe 12 O 19 . [19][20][21][22] Two methods are adopted and compared to obtain the composites with fine and homogeneously dispersed grains of the second phase. The distribution of the Ba 0.5 Sr 0.5 Fe 12 O 19 phase is described quantitatively using the fractal theory.…”