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Optical and dielectric studies of Zn doped cerium nanocomposite

Author(s): T.R.Sherly, R.Raveendran

Cerium phosphate was synthesized by co-precipitation method – the base salt. This base salt was doped with zinc having different molarities. Their structure and morphologywere characterized byX- ray diffraction (XRD), Fourier transform infra red spectroscopy (FTIR), scanning electron microscopy (SEM) and transmission electronmicroscopy (TEM). Optical propertieswere analyzed byUV– Visible absorption and diffuse reflectance spectra, Raman spectra and Photoluminescence spectra. The observed photoluminescence of the sample is attributed to various defects resulting from crystallization and also due to the amount of Ce3+ in mixed oxide system. Violet, Blue, Green emissions were observed which make our samples useful in photonic devices. Ion exchange studies were carried out on protonated base sample. Chemical composition was obtained with energy dispersive X- ray spectroscopy (EDS). Dielectric constant and loss tangentwere determined. Thermal stability analyzed with TGA/DTA.

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