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Amounts of the as-synthesized CuAl0.6Cr0.2Fe1.2O4 nanoparticles by the chemical co-precipitation method were annealed for 4h at one of the temperatures TA=300, 500, 600, 800 and 1000°C for each. The techniques used for characterizing the samples were X-ray diffractions, infrared (IR) and Mössbauer spectroscopy and vibrating sample magnetometer. This study proved single-phase cubic structure of the...
The ultral fine alpha-alumina powder has been successfully synthesized via two-step hydrolysis of aluminum isopropoxide. Glucose and polyvinyl pyrrolidone were used as surfactants during the appropriate processing step. The alpha-alumina powder was used as seed particles. Several synthesis parameters, such as the amount of seeds, surfactants, and calcination temperature, were studied by X-ray diffraction...
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