SrZrO3

SrZrO3, or strontium zirconate, is an inorganic ceramic oxide that adopts the perovskite-related ABO3 structure, with strontium occupying the A site and zirconium occupying the B site surrounded by oxide anions. As a member of the alkaline-earth zirconate family, it shares structural similarities with other perovskites such as SrTiO3, but with the Zr4+ cation replacing Ti4+ at the B site. The material is typically prepared by solid-state reaction routes from stoichiometric mixtures of SrO or SrCO3 and ZrO2, followed by high-temperature sintering to achieve the dense ceramic.

SrZrO3 is valued for its thermal and chemical stability and its insulating properties. It exhibits a wide band gap characteristic of many oxide insulators and can show substantial dielectric performance at elevated temperatures. In terms of structure, perovskite oxides often undergo temperature-driven phase transitions that change the symmetry of the lattice; SrZrO3 is reported to adopt a high-temperature cubic perovskite phase with transitions to lower-symmetry structures at lower temperatures, a behavior common among related zirconates and titanates.

Applications and research focus for SrZrO3 include its use as a high-temperature dielectric material in electronic and electrochemical devices, and as a diffusion barrier or substrate for the growth of other complex oxides. Its relatively inert chemistry and compatibility with other perovskites make it a subject of interest for studies of solid-state chemistry and for potential integration into devices requiring stable, high-temperature dielectric components. Ongoing work often explores doping and solid-solution strategies to tailor its dielectric and phase-transition properties.