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- W2000987752 abstract "Abstract Strontium hexaferrite nanoparticles were synthesized by chemical coprecipitation method in the presence of polyvinylpyrrolidone (PVP) as a protective agent. A mixture of the deionized water/ethanol (50/50) was used as the solvent. The effects of PVP, pH of the solution, Fe 3+ /Sr 2+ molar ratio and calcination temperature of the precipitates on the synthesis of strontium hexaferrite samples were studied. X-ray diffraction (XRD), scanning electron microscope (SEM), thermal analysis (DTA–TGA), dynamic light scattering particle size analyzer (PSA) and vibrating sample magnetometer (VSM) were used to investigate the properties of the obtained samples. The results showed that increasing the pH from 9 to 13 or decreasing Fe 3+ /Sr 2+ molar ratio from 12 to 9 promoted SrFe 12 O 19 formation and decreased the size of nanoparticles. The minimum coercivity of 4733 Oe and maximum saturation magnetization of 51 emu/g were obtained by increasing the pH from 9 to 13. It was also concluded that PVP could be effective in decreasing the size of SrFe 12 O 19 nanoparticles and resulted to decrease the calcination temperature from 800 to 700 °C." @default.
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- W2000987752 date "2012-01-01" @default.
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- W2000987752 title "Investigation of the effective parameters on the synthesis of strontium hexaferrite nanoparticles by chemical coprecipitation method" @default.
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- W2000987752 doi "https://doi.org/10.1016/j.jallcom.2011.09.059" @default.
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