Investigating the Influence of Zr4+ Content on the Crystal Structure, Micromorphology, and Dielectric Properties of Ba(ZrxTi1-X)O3 Ceramics

Abstract

By using a solid-state reaction technique, Ba(ZrxTi1-x)O3 ceramics (X=1.5, 2.0, 2.5, and 3.0) were created. Controlling the Zr/Ti ratio has an impact on the dielectric characteristics, micromorphology, and crystal structure of BZT ceramics. X-ray diffraction, scanning electron microscopy, and impedance analysis were each used to characterise the crystal structures, morphologies, and electric characteristics of the samples. The zirconium titanate ceramic samples exhibit cubic phase behaviour and no secondary phase, according to the X-ray diffraction patterns. The microstructure, dielectric characteristics, and crystal structure are all significantly influenced by the Zr/Ti ratio. The lattice constant rises and the grain size falls as the Zr4+ content does.When the Zr content reaches 15%, the dielectric constant is at its highest. The dielectric constant steadily falls as the Zr4+ content rises, and the Curie temperature gradually descends into the low temperature zone.