Abstract
Metal oxide nanocomposites are in high demand due to their versatile properties and wide range of applications in modern technology, including energy storage devices, electrode material design, and dye-sensitized solar cells (DSSCs). Nanocomposites of LaxCe2-xO3/SnO2 were prepared via sol-gel method. This research work has reported a detailed study of the dielectric properties of LaxCe2-xO3/SnO2 nanocomposites at high frequencies (1 MHz–3 GHz). After forming a mixed phase, the surface morphology was confirmed by HR-TEM, resulting in a significant change in particle size and distribution. Different polarization stages, the effect of grain boundaries and the relaxation phenomenon were discussed with the impact of La3+ contents. Relaxation behaviour at high frequency was examined due to strong polarization. In addition, a high dielectric constant value at high frequency shows that these nanocomposites are eligible to store more energy. At x = 0.6, the maximum value of the dielectric constant was observed. Results demonstrate that LaxCe2-xO3/SnO2 nanocomposites are competent for microwave, high-frequency devices and energy storage applications.
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