DYSPROSIUM OXIDE DOPING EFFECTS ON THE PHYSICAL AND ELECTRICAL BEHAVIOR OF PRASEODYMIUM OXIDE-BASED TIN OXIDE VARISTORS

Abstract

This research explores how doping praseodymium oxide (Pr6O11)-based tin oxide (SnO2) varistors with dysprosium oxide (Dy2O3) impacts their electrical and physical properties. Varistors with different concentrations of Dy2O3 were fabricated using a solid-state reaction method and then analyzed for changes in microstructure, electrical behavior, and thermal stability. The results reveal that the inclusion of Dy2O3 significantly influences grain size, morphology, and high-voltage breakdown characteristics. These adjustments result in altered varistor properties, such as breakdown voltage and nonlinear coefficients. Additionally, Dy2O3 affects sintering behavior and enhances thermal stability. This study offers valuable insights into how Dy2O3 can be used to fine-tune the electrical and physical properties of Pr2O3-based SnO2 varistors, making them better suited for specific applications.