Generality of the environmentally benign catecholate method to the synthesis of barium-based perovskites

摘要

Barium titanate, barium zirconate, and barium hafnate are essential components of the electroceramic industry. Barium titanate is essentially used as multi-layered ceramic capacitors in computers, aerospace, and communication technologies. Barium zirconate is one of the most inert, stable, and corrosion-resistant perovskite employed in superconducting applications. Barium hafnate is used as a component of hybrid ceramic structures for high-temperature applications. The goal of this research was to apply a more environmentally benign synthesis design to the production of barium-based perovskites. The catecholate method, originally applied to the synthesis of barium titanate, was utilized as the approach for the synthesis of barium zirconate and barium hafnate. This developmental process consumed naturally occurring isomorphic forms of metal oxides and no post-sintering treatment was necessary. It resulted in the absence of by-products in most steps while achieving superior stoichiometric control o...