1. The Giant Electrocaloric Effect in Inorganic and Organic Ferroelectric Relaxor Systems
- Author
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Brigita Rožič, Barbara Malič, Hana Uršič, Zdravko Kutnjak, Janez Holc, Qiming Zhang, Marija Kosec, and Sheng-Guo Lu
- Subjects
chemistry.chemical_classification ,Ferroelectric relaxor ,Materials science ,Polymer ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials ,Responsivity ,chemistry ,Critical point (thermodynamics) ,visual_art ,Copolymer ,Electrocaloric effect ,visual_art.visual_art_medium ,Ceramic ,Composite material ,Relaxor ferroelectric - Abstract
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 ΔTEC/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.
- Published
- 2012