The Giant Electrocaloric Effect in Inorganic and Organic Ferroelectric Relaxor Systems

The electrocaloric effect (ECE) has recently become very attractive phenomenon due to its various potential applications, for example in heating or cooling devices of new generation which could be more efficient and environmentally friendly. Here a direct measurements of the ECE in thick films of 8/...

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Published inFerroelectrics Vol. 430; no. 1; pp. 98 - 102
Main Authors Rožič, B., Malič, B., Uršič, H., Holc, J., Kosec, M., Lu, S.-G., Zhang, Q. M., Kutnjak, Z.
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis Group 01.01.2012
Taylor & Francis Ltd
Subjects
Blends
Ceramics
Copolymers
Dielectric properties
Electrocaloric effect
Ferroelectric materials
Ferroelectricity
Ferroelectrics
polymer
Polymers
relaxor ferroelectric
Relaxors
Temperature
thick film
Thick films
Zirconium titanates
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Summary:The electrocaloric effect (ECE) has recently become very attractive phenomenon due to its various potential applications, for example in heating or cooling devices of new generation which could be more efficient and environmentally friendly. Here a direct measurements of the ECE in thick films of 8/65/35 PLZT ceramics, and in the relaxor ferroelectric polymer composition P(VDF-TrFE-CFE) 0.95 -P(VDF-CTFE) 0.05 near room temperature are presented. Our results are consistent with those obtained by indirect measurements. The maximum of the ECE responsivity ΔT EC /E in 8/65/35 PLZT thick films is achieved near the critical point, and in the terpolymer/copolymer blends it is shifted toward higher fields.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2012.677726