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Tuning of electrocaloric performance in (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 by induced relaxor-like behavior

Weyland, Florian and Hayati, Raziye and Novak, Nikola (2019):
Tuning of electrocaloric performance in (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 by induced relaxor-like behavior.
In: Ceramics international, Elsevier SCI LTD, Oxford, England, pp. 11408-11412, 2019, (45), ISSN 0272-8842, DOI: 10.1016/j.ceramint.2019.03.006, [Article]

Abstract

Induced relaxor-like behavior is reported by addition of a sintering additive to the (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 solid solution. The effect of Bi2O3 sinter additive on microstructure is determined. The phase transition behavioris highlighted by dielectric permittivity measurements. The electrocaloric temperature change is directly measured and comparison with literature data is provided on basis of the material related cooling power. Addition of Bi2O3 drastically increases the temperature stability and an ultra-wide temperature range of over 100 K is achieved. The findings path a way to tune electrocaloric materials for optimization of properties for solid-state coolers based on the electrocaloric effect.

Item Type: Article
Erschienen: 2019
Creators: Weyland, Florian and Hayati, Raziye and Novak, Nikola
Title: Tuning of electrocaloric performance in (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 by induced relaxor-like behavior
Language: English
Abstract:

Induced relaxor-like behavior is reported by addition of a sintering additive to the (Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 solid solution. The effect of Bi2O3 sinter additive on microstructure is determined. The phase transition behavioris highlighted by dielectric permittivity measurements. The electrocaloric temperature change is directly measured and comparison with literature data is provided on basis of the material related cooling power. Addition of Bi2O3 drastically increases the temperature stability and an ultra-wide temperature range of over 100 K is achieved. The findings path a way to tune electrocaloric materials for optimization of properties for solid-state coolers based on the electrocaloric effect.

Journal or Publication Title: Ceramics international
Volume: 2019
Number: 45
Publisher: Elsevier SCI LTD, Oxford, England
Uncontrolled Keywords: Electrical properties Ferroelectric properties BaTiO3 and titanates Perovskites
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 23 Apr 2019 10:46
DOI: 10.1016/j.ceramint.2019.03.006
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