OBTENÇÃO E CARACTERIZAÇÃO DE NANOPARTÍCULAS DE BaTiO3 VIA PROCESSO NÃO CONVENCIONAL DE LIOFILIZAÇÃO E SUA APLICAÇÃO COMO SENSOR DE TEMPERATURA POSITIVA (PTC)

Abstract

Over the years, BaTiO3 has been used in a wide variety of crystal types applications, ceramic structures, multilayer and thin films. Lately, the utilities techniques to obtain BaTiO3 are so diversified and was cited in several works. The picked method for the synthesis of BaTiO3 in this work was the non conventional method called freeze drying, which consist to obtain powders in low temperature. Nanoparticulated powders was produced with pure phase at 973K and characterized as positive temperature coefficient (PTC).