Direct Measurements of the Electrocaloric Effect in Bulk PbMg1/3Nb2/3O3 (PMN) Ceramics

Electrocaloric effect (ECE), i.e., a reversibly change in the temperature of an electrocaloric material due to the adiabatically applied electric field, is very attractive phenomenon due to its applications, for example in electric refrigeration. The first observations of the giant ECE were based on...

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Bibliographic Details
Published inFerroelectrics Vol. 421; no. 1; pp. 103 - 107
Main Authors Rožič, B., Malič, B., Uršič, H., Holc, J., Kosec, M., Kutnjak, Z.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Colchester Taylor & Francis Group 01.01.2011
Taylor & Francis
Subjects
bulk ceramics
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Electrocaloric effect
Exact sciences and technology
Ferroelectricity and antiferroelectricity
Phase transitions and curie point
Physics
relaxor ferroelectrics
Electrocaloric effect
Ferroelectric transitions
Electric field effects
Relaxor
bulk ceramics
Lead magnesium niobates
relaxor ferroelectrics
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Summary:Electrocaloric effect (ECE), i.e., a reversibly change in the temperature of an electrocaloric material due to the adiabatically applied electric field, is very attractive phenomenon due to its applications, for example in electric refrigeration. The first observations of the giant ECE were based on indirect measurements of the electric polarization and not on direct measurements of the ECE itself. By using direct measurements of ECE we show existence of the giant ECE in PMN ceramics near the electric field-induced ferroelectric phase transition.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2011.594742