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Fatigue-less electrocaloric effect in relaxor Pb(Mg1/3Nb2/3)O3 multilayer elements

Fulanovic, Lovro and Koruza, Jurij and Novak, Nikola and Weyland, Florian and Malič, Barbara and Bobnar, Vid (2017):
Fatigue-less electrocaloric effect in relaxor Pb(Mg1/3Nb2/3)O3 multilayer elements.
In: Journal of the European Ceramic Society, 37, pp. 5105-5108. Elsevier Science Ltd., ISSN 09552219,
DOI: 10.1016,
[Article]

Abstract

A study was made of the electrocaloric (EC) effect’s stability in relaxor Pb(Mg1/3Nb2/3)O3 multilayer elements. The sample was subjected to 106 unipolar cycles at an electric field amplitude of 110 kV cm−1. The dielectric and ferroelectric properties of the material change only slightly, while the microstructure does not reveal any detrimental evidence of the cycling. The initially measured EC temperature change of 1.45 K decreases by only 0.01 K upon cycling, exhibiting a fatigue-less behavior. The results justify the choice of relaxor multilayers as the working bodies in EC cooling devices, where the material should withstand numerous electric field cycles with high amplitudes, sometimes exceeding 100 kV cm−1. © 2017 Elsevier Ltd. All rights reserved.

Item Type: Article
Erschienen: 2017
Creators: Fulanovic, Lovro and Koruza, Jurij and Novak, Nikola and Weyland, Florian and Malič, Barbara and Bobnar, Vid
Title: Fatigue-less electrocaloric effect in relaxor Pb(Mg1/3Nb2/3)O3 multilayer elements
Language: English
Abstract:

A study was made of the electrocaloric (EC) effect’s stability in relaxor Pb(Mg1/3Nb2/3)O3 multilayer elements. The sample was subjected to 106 unipolar cycles at an electric field amplitude of 110 kV cm−1. The dielectric and ferroelectric properties of the material change only slightly, while the microstructure does not reveal any detrimental evidence of the cycling. The initially measured EC temperature change of 1.45 K decreases by only 0.01 K upon cycling, exhibiting a fatigue-less behavior. The results justify the choice of relaxor multilayers as the working bodies in EC cooling devices, where the material should withstand numerous electric field cycles with high amplitudes, sometimes exceeding 100 kV cm−1. © 2017 Elsevier Ltd. All rights reserved.

Journal or Publication Title: Journal of the European Ceramic Society
Journal volume: 37
Publisher: Elsevier Science Ltd.
Uncontrolled Keywords: Electrocaloric Multilayer Relaxors Fatigue PMN
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: 21 Aug 2017 08:28
DOI: 10.1016
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