Investigations of Secondary Contribution to Electrocaloric Effect in Relaxor PMN-PT Ceramic

Autor:	T. M. Correia, Maciej Rokosz
Rok vydání:	2015
Předmět:	Materials science visual_art visual_art.visual_art_medium Electrocaloric effect Heterojunction Ceramic Atmospheric temperature range Advanced materials Composite material Condensed Matter Physics Piezoelectricity Electronic Optical and Magnetic Materials
Zdroj:	Ferroelectrics. 478:165-169
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150193.2015.1011560
Popis:	In this work, primary and secondary contributions to electrocaloric effect were investigated in a relaxor PMN-PT ceramic, by combining polarization and strain hysteretic measurements. Our results indicate that, although the ceramic shows a large electromechanical response, field-induced dimensional change (secondary effect) accounts for less than 19 % of the ceramic electrocaloric response over the 30-200°C temperature range. We believe that the method for the characterization of electrocaloric materials presented herein can provide valuable insights into the development of novel and optimized materials and heterostructures by tailoring primary and secondary contributions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6e7b941635a5993a8e33acdc3ec12583 https://doi.org/10.1080/00150193.2015.1011560 Zobrazit plný text záznamu