Abstract
In this work, we have investigated the structural and dielectric properties of Sr doped SnO2 nanoparticles synthesized via sol-gel process. Single phase tetragonal rutile structure of Sr doped SnO2 nanoparticles (NPs) have been examined by X-ray diffraction. No impurity peak has been detected which signifies the purity of the prepared sample. Average crystallite size has been calculated using Scherrer’s formula and found to be 10.3 nm. Dielectric measurements have been carried out in the frequency range of 75 kHz to 5 MHz using LCR meter. Dielectric constant and loss both decrease with increase in frequency while increased in ac conductivity is observed with frequency such behaviour can be explained using Maxwell-Wagner two-layer model.
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