Phase characteristics, microstructure, and dielectric properties of Ba0.7Ca0.3TiO3-BaTiO3 ceramics

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Published: Dec 26, 2022
Keywords:
ceramics dielectric, ferroelectric piezoelectric

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Krit Yantabutr
Faculty of Science, Energy and Environment, King Mongkut’s University of Technology North Bangkok, Rayong Campus
Panupong Jaiban
Research Center for Quantum Technology, Faculty of Science, Chiang Mai University

Abstract

          In this work, phase characteristics, microstructure, and dielectric properties of (100-x)Ba0.7Ca0.3TiO3-(x)BaTiO3 (BCT-BT) where x=0, 30, 50, 70, and 100 wt% were investigated. The ceramics were prepared using a conventional solid-state sintering technique. The optimized sintering temperatures were between 1,400 oC. The relative density values of all sintered ceramics were higher than 95%. X-ray diffraction patterns resulted confirmed the tetragonal structure of these ceramics, except BCT ceramic. BCT ceramic had a board dielectric peak; BT had a sharp dielectric peak. BCT-BT binary ceramic showed a sharp dielectric behavior. The composition x=70 wt% had maximum dielectric constant. These results suggested that the dielectric properties of BT and BCT could be modified using their binary ceramic, which made this material for dielectric devices.

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How to Cite
Yantabutr, K., & Jaiban, P. (2022). Phase characteristics, microstructure, and dielectric properties of Ba0.7Ca0.3TiO3-BaTiO3 ceramics. RMUTSB ACADEMIC JOURNAL, 10(2), 160–168. Retrieved from https://li01.tci-thaijo.org/index.php/rmutsb-sci/article/view/253710
Issue
Vol. 10 No. 2 (2022): July - December 2022
Section
Research Article
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