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

Fulanovi´c, Lovro ; Koruza, Jurij ; Novak, Nikola ; Weyland, Florian ; Malič, Barbara ; Bobnar, Vid :
Fatigue-less electrocaloric effect in relaxor Pb(Mg1/3Nb2/3)O3 multilayer elements.
In: Journal of the European Ceramic Society, 37 pp. 5105-5108. ISSN 09552219
[Artikel], (2017)

Kurzbeschreibung (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.

Typ des Eintrags: Artikel
Erschienen: 2017
Autor(en): Fulanovi´c, Lovro ; Koruza, Jurij ; Novak, Nikola ; Weyland, Florian ; Malič, Barbara ; Bobnar, Vid
Titel: Fatigue-less electrocaloric effect in relaxor Pb(Mg1/3Nb2/3)O3 multilayer elements
Sprache: Englisch
Kurzbeschreibung (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.

Titel der Zeitschrift, Zeitung oder Schriftenreihe: Journal of the European Ceramic Society
Band: 37
Verlag: Elsevier Science Ltd, England
Freie Schlagworte: Electrocaloric Multilayer Relaxors Fatigue PMN
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Nichtmetallisch-Anorganische Werkstoffe
Hinterlegungsdatum: 21 Aug 2017 08:28
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