Abstract
Perovskite-type crystalline undoped and zinc doped (10, 15, 20, and 25 mole-% concentration) BaSnO3 were prepared based on modified solid state process with agate mill activation. An annealing temperature of 1473 K was selected from a DSC-TGA study for the preparation of undoped and zinc doped BaSnO3. Phase evolutions of the sintered samples were done by XRD studies. Morphological features were studied by FESEM and the presence of elements was identified by EDX to confirm the compositions of the material. Raman active modes and M-O coordinations were obtained from Raman spectra; FTIR analyses confirming the successful synthesis of undoped and doped perovskite. Optical properties were confirmed by UV-VlS and PL spectra analyses. The band gap was estimated to increase with dopant concentrations. PL emission was observed to be in the visible spectrum for doped samples. It was found that with an increase in Zn doping concentrations on BaSnO3 there was a decrease in the ferroelectricity. The decrease in ferroelectric behavior may be due to an increase of defect induced conductivity at lattice sites with an increase of Zn doping.
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Chakraborty, T., Mukherjee, S. & Mukherjee, S. Effect of Zn Doping on the Crystallization, Dielectric, and Ferroelectric Properties of Solid State Sintered Barium Stannate. Interceram. - Int. Ceram. Rev. 66, 101–110 (2017). https://doi.org/10.1007/BF03401206
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DOI: https://doi.org/10.1007/BF03401206