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Enhanced electrocaloric effect in glass-added 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 ceramics

Enhanced electrocaloric effect in glass-added 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 ceramics In the present study, 3BaO-3TiO2-B2O3 (BTBO) glass-added 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 (BNT-BT) ferroelectric ceramics were synthesized using a conventional solid-state reaction methodology. The electrocaloric effect on glass-added ceramics was calculated using Maxwell relations. The maximum adiabatic temperature changes of 0.21, 0.25, and 0.14 K were obtained at 40 kV/cm for 2, 4, and 6% glass addition which are significantly higher than those of the pure sample (0.08 K) under study. The results reveal that glass addition up to 4% resulted in enhanced electrocaloric response. Further, the effect of glass addition on the dielectric properties was investigated. The dielectric constant decreases with glass addition compared with pure BNT-BT at 303 K. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of the Australian Ceramic Society Springer Journals

Enhanced electrocaloric effect in glass-added 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 ceramics

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Australian Ceramic Society
Subject
Materials Science; Ceramics, Glass, Composites, Natural Materials; Materials Engineering; Inorganic Chemistry
ISSN
2510-1560
eISSN
2510-1579
DOI
10.1007/s41779-017-0063-5
Publisher site
See Article on Publisher Site

Abstract

In the present study, 3BaO-3TiO2-B2O3 (BTBO) glass-added 0.94Bi0.5Na0.5TiO3-0.06BaTiO3 (BNT-BT) ferroelectric ceramics were synthesized using a conventional solid-state reaction methodology. The electrocaloric effect on glass-added ceramics was calculated using Maxwell relations. The maximum adiabatic temperature changes of 0.21, 0.25, and 0.14 K were obtained at 40 kV/cm for 2, 4, and 6% glass addition which are significantly higher than those of the pure sample (0.08 K) under study. The results reveal that glass addition up to 4% resulted in enhanced electrocaloric response. Further, the effect of glass addition on the dielectric properties was investigated. The dielectric constant decreases with glass addition compared with pure BNT-BT at 303 K.

Journal

Journal of the Australian Ceramic SocietySpringer Journals

Published: May 6, 2017

References