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<p>In the present communication, cold sintering process (CSP) is used to achieve high density (94% of theoretical density) of SrTiO<sub>3</sub> monolith at extremely low temperature of 300&#xa0;°C for 30&#xa0;min. This proves that the CSP is beneficial for SrTiO<sub>3</sub> ceramics processing in achieving better densification at such extremely low temperatures, making it a more energy-efficient and environmentally friendly alternative to traditional sintering procedures that need temperatures above 1000&#xa0;°C. It was found that the dielectric constant and loss of SrTiO<sub>3</sub> ceramics decreased monotonically from 275 and 0.75 to 118 and 0.05, respectively in the frequency range of 1000&#xa0;Hz–8&#xa0;MHz. The dielectric loss further decreased to 0.02 with a rise in dielectric constant of 177 between 8 and 20&#xa0;MHz. This study demonstrates the potential of cold sintering to densify SrTiO<sub>3</sub> extremely at low temperature and the usefulness of SrTiO<sub>3</sub> for energy storage applications at high frequency with minimal dielectric loss.</p>

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Cold Sintering Process: A Sustainable Manufacturing Technique for High Dielectric Monolithic SrTiO3

  • 期刊论文

  • 发表日期：

    2025年6月26日

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  • Praveen Kumar Mudavath,
  • Ashutosh Kumar,
  • Brahma Raju Golla

摘要

In the present communication, cold sintering process (CSP) is used to achieve high density (94% of theoretical density) of SrTiO3 monolith at extremely low temperature of 300 °C for 30 min. This proves that the CSP is beneficial for SrTiO3 ceramics processing in achieving better densification at such extremely low temperatures, making it a more energy-efficient and environmentally friendly alternative to traditional sintering procedures that need temperatures above 1000 °C. It was found that the dielectric constant and loss of SrTiO3 ceramics decreased monotonically from 275 and 0.75 to 118 and 0.05, respectively in the frequency range of 1000 Hz–8 MHz. The dielectric loss further decreased to 0.02 with a rise in dielectric constant of 177 between 8 and 20 MHz. This study demonstrates the potential of cold sintering to densify SrTiO3 extremely at low temperature and the usefulness of SrTiO3 for energy storage applications at high frequency with minimal dielectric loss.