Hyppää sisältöön
    • FI
    • ENG
  • FI
  • /
  • EN
OuluREPO – Oulun yliopiston julkaisuarkisto / University of Oulu repository
Näytä viite 
  •   OuluREPO etusivu
  • Oulun yliopisto
  • Avoin saatavuus
  • Näytä viite
  •   OuluREPO etusivu
  • Oulun yliopisto
  • Avoin saatavuus
  • Näytä viite
JavaScript is disabled for your browser. Some features of this site may not work without it.

Electrocaloric properties in relaxor ferroelectric (1−x)Pb(Mg₁<sub>/</sub>₃Nb₂<sub>/</sub>₃)O₃–xPbTiO₃ system

Peräntie, J.; Tailor, H. N.; Hagberg, J.; Jantunen, H.; Ye, Z.-G. (2013-11-04)

 
Avaa tiedosto
nbnfi-fe201708168135.pdf (1.182Mt)
nbnfi-fe201708168135_meta.xml (38.57Kt)
nbnfi-fe201708168135_solr.xml (34.23Kt)
Lataukset: 

URL:
https://doi.org/10.1063/1.4829012

Peräntie, J.
Tailor, H. N.
Hagberg, J.
Jantunen, H.
Ye, Z.-G.
American Institute of Physics
04.11.2013

Journal of Applied Physics 114, 174105 (2013); doi: 10.1063/1.4829012

https://rightsstatements.org/vocab/InC/1.0/
© 2013 AIP Publishing LLC. Published in this repository with the kind permission of the publisher.
https://rightsstatements.org/vocab/InC/1.0/
doi:https://doi.org/10.1063/1.4829012
Näytä kaikki kuvailutiedot
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe201708168135
Tiivistelmä

Abstract

The electrocaloric effect (ECE) in the Pb(Mg₁/₃Nb₂/₃)O₃–PbTiO₃ (PMN-PT) solid solution system was investigated by means of detailed direct temperature measurements as a function of temperature, composition, and electric field. The (1−𝑥)PMN-𝑥PT ceramics of compositions 0 ≤ 𝑥 ≤ 0.3 were fabricated by the columbite route. In opposite to conventional ferroelectrics, the maximum of electrocaloric effect was found to shift from the proximity of depolarization/Curie temperature to higher temperatures above a certain composition-dependent electric field strengths. Especially, the compositions with low PT content showed a broadened temperature range of electrocaloric effect. With increasing PbTiO₃ concentration, the magnitude of Δ𝑇 increased, and the temperature dependence of the maximum ECE response gradually developed towards a more pronounced anomaly typical for conventional ferroelectrics. The arising high temperature electrocaloric effect in the ergodic relaxor phase was attributed to the contribution from polar nanoregions. All the compositions studied showed the highest electrocaloric activity just above the depolarization/Curie temperature close to the possible critical point, as recently predicted and observed for some compositions. The magnitude of the maximum electrocaloric temperature change was in the range of Δ𝑇 = 0.77–1.55 °C under an electric field strength of 50 kV/cm.

Kokoelmat
  • Avoin saatavuus [37635]
oulurepo@oulu.fiOulun yliopiston kirjastoOuluCRISLaturiMuuntaja
SaavutettavuusselosteTietosuojailmoitusYlläpidon kirjautuminen
 

Selaa kokoelmaa

NimekkeetTekijätJulkaisuajatAsiasanatUusimmatSivukartta

Omat tiedot

Kirjaudu sisäänRekisteröidy
oulurepo@oulu.fiOulun yliopiston kirjastoOuluCRISLaturiMuuntaja
SaavutettavuusselosteTietosuojailmoitusYlläpidon kirjautuminen