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<p>This study presents the synthesis, structural characterization, and dielectric analysis of Sr<sub>1-<i>x</i></sub>Mg<sub><i>x</i></sub>TiO<sub>3</sub> compounds, where <i>x</i> = 0.05, 0.10, and 0.15, to explore their potential in electrical insulation and thermal management applications. MgO nanoparticles were synthesized using the sol–gel auto-combustion method and integrated into the SrTiO<sub>3</sub> matrix through stoichiometric blending. The prepared mixtures underwent grinding, pelletization, and sintering at 1200&#xa0;°C. X-ray Diffraction (XRD) confirmed the formation of a cubic perovskite structure with successful Mg incorporation, showing no secondary phases and revealing lattice distortions attributable to ionic substitution. Field Emission Scanning Electron Microscopy (FESEM) revealed a uniform microstructure, while Energy Dispersive X-ray Spectroscopy (EDS) validated the elemental composition. Dielectric measurements across various frequencies demonstrated that MgO doping significantly affected the material’s permittivity and capacitance, primarily due to reduced polarizability and the presence of Mg's lower polarizable and higher free-electron content. Frequency-dependent trends were also observed in impedance, dissipation factor, and inductance, correlating strongly with doping concentrations. These changes highlight the influence of MgO on energy storage potential, thermal stability, and electrical insulation performance, suggesting suitability for high-temperature and catalytic applications. Furthermore, linear regression analysis of electrical parameters revealed significant predictors, providing deeper insights into the structure–property relationships. Overall, this work advances the understanding of Mg-doped SrTiO<sub>3</sub> systems and their prospective utility in advanced electronics and materials science.</p>

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Photocatalytic and Thermal Characterization of SrTiO3 Doped with MgO Nanoparticles for Advanced Insulation Applications

  • 期刊论文

  • 发表日期：

    2026年7月10日

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  • Vivekanand Jakhar,
  • Ankur Kumar,
  • Abhinav Sharma,
  • Sanjay Dhanka,
  • Manu Kumar,
  • Nitin Kumar,
  • Abhjit Bhowmik,
  • Vivek John,
  • Harvinder Singh,
  • Purnendu Shekar Pandey,
  • Jeewan Singh

摘要

This study presents the synthesis, structural characterization, and dielectric analysis of Sr1-xMgxTiO3 compounds, where x = 0.05, 0.10, and 0.15, to explore their potential in electrical insulation and thermal management applications. MgO nanoparticles were synthesized using the sol–gel auto-combustion method and integrated into the SrTiO3 matrix through stoichiometric blending. The prepared mixtures underwent grinding, pelletization, and sintering at 1200 °C. X-ray Diffraction (XRD) confirmed the formation of a cubic perovskite structure with successful Mg incorporation, showing no secondary phases and revealing lattice distortions attributable to ionic substitution. Field Emission Scanning Electron Microscopy (FESEM) revealed a uniform microstructure, while Energy Dispersive X-ray Spectroscopy (EDS) validated the elemental composition. Dielectric measurements across various frequencies demonstrated that MgO doping significantly affected the material’s permittivity and capacitance, primarily due to reduced polarizability and the presence of Mg's lower polarizable and higher free-electron content. Frequency-dependent trends were also observed in impedance, dissipation factor, and inductance, correlating strongly with doping concentrations. These changes highlight the influence of MgO on energy storage potential, thermal stability, and electrical insulation performance, suggesting suitability for high-temperature and catalytic applications. Furthermore, linear regression analysis of electrical parameters revealed significant predictors, providing deeper insights into the structure–property relationships. Overall, this work advances the understanding of Mg-doped SrTiO3 systems and their prospective utility in advanced electronics and materials science.