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Title: Effects of Mg and La Co-doping on Dielectric, Ferroelectric, and Piezoelectric Properties of Barium Calcium Zirconate Titanate Ceramics
Authors: Panupong Jaiban
Pimpilai Wannasut
Puripat Kantha
Methee Promsawat
Anucha Watcharapasorn
Keywords: Mg and La ions
defect dipole
point defects
Issue Date: 2020
Publisher: Faculty of Science, Chiang Mai University
Citation: Chiang Mai Journal of Science 47,4 (Special Issue II : July 2020), p.633-641
Abstract: In this study, the barium calcium zirconate titanate ceramics with Mg and La doping are prepared by employing a conventional solid-state sintering technique. The addition of Mg ions decreases the sintering temperature of BCZT ceramic. All ceramics show dense microstructure with different grain sizes. X-ray diffraction patterns indicate the co-existence of rhombohedral and tetragonal phases in these ceramics. Upon doping, the shift of phase transition temperature to lower temperature and a broad dielectric peak are induced. The co-doping enhances the maximum dielectric constant at high temperatures. Ferroelectric and piezoelectric properties of BCZT show a decreasing trend with the doping. The result here suggests that the fabrication, microstructure, electrical properties of BCZT ceramic can be tunable via La or Mg doping, which may be used in dielectric devices.
Description: The Chiang Mai Journal of Science is an international English language peer-reviewed journal which is published in open access electronic format 6 times a year in January, March, May, July, September and November by the Faculty of Science, Chiang Mai University. Manuscripts in most areas of science are welcomed except in areas such as agriculture, engineering and medical science which are outside the scope of the Journal. Currently, we focus on manuscripts in biology, chemistry, physics, materials science and environmental science. Papers in mathematics statistics and computer science are also included but should be of an applied nature rather than purely theoretical. Manuscripts describing experiments on humans or animals are required to provide proof that all experiments have been carried out according to the ethical regulations of the respective institutional and/or governmental authorities and this should be clearly stated in the manuscript itself. The Editor reserves the right to reject manuscripts that fail to do so.
ISSN: 2465-3845
Appears in Collections:CMUL: Journal Articles

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