Open AccessStudy of Composition Variation on Dielectric and Impedance Spectra of Tetragonal-Rhombohedral System in (1-x)BZT-(x)BCT Composites
Author(s) -
. Himani,
Shweta Thakur,
Anupinder Singh,
Radheshyam Rai
Publication year - 2022
Publication title -
journal of modern mechanical engineering and technology
Language(s) - English
Resource type - Journals
ISSN - 2409-9848
DOI - 10.31875/2409-9848.2022.09.4
Subject(s) - tetragonal crystal system , dielectric , materials science , crystallite , trigonal crystal system , electrical impedance , composite material , diffraction , phase (matter) , ceramic , analytical chemistry (journal) , crystal structure , crystallography , optics , chemistry , metallurgy , electrical engineering , optoelectronics , physics , organic chemistry , engineering , chromatography
In present work, (1-x)[BaZr0.2Ti0.8O3]-(x)[Ba0.7Ca0.3TiO3] (BZT-BCT) (where x = 0.50, 0.60 and 0.75) were fabricated by solid-state reaction technique. Structural, dielectric and impedance properties of the synthesized composites were investigated and discussed in detail. The X-ray diffraction technique shows that all the samples possessed a double-phase polycrystalline sample with a tetragonal-rhombohedral structure. Dielectric and impedance behavior were investigated in a wide range of temperatures (room temperature (RT) - 500˚C) and frequency (100 Hz ≤f ≤ 1 MHz). A broad dielectric constant peak was observed around the phase transition temperature.