Enhanced Electrocaloric Effects in Spark Plasma-Sintered Ba0.65Sr0.35TiO3-Based Ceramics at Room Temperature

Improvement of electrocaloric effect was investigated in the lead‐free undoped and Mn‐doped Ba0.65Sr0.35TiO3 ceramics prepared by spark plasma sintering process. Owing to the merit of spark plasma sintering process, a fully dense undoped and Mn‐doped Ba0.65Sr0.35TiO3 ceramics with fine grain sizes c...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Ceramic Society 2013-04, Vol.96 (4), p.1021-1023
Main Authors: Liu, Xiao Qiang, Chen, Ting Ting, Wu, Yong Jun, Chen, Xiang Ming
Format: Article
Language:English
Subjects:
Ceramics
Dielectric strength
Grain size
Lead free
Manganese
Sintering
Spark plasma sintering
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Improvement of electrocaloric effect was investigated in the lead‐free undoped and Mn‐doped Ba0.65Sr0.35TiO3 ceramics prepared by spark plasma sintering process. Owing to the merit of spark plasma sintering process, a fully dense undoped and Mn‐doped Ba0.65Sr0.35TiO3 ceramics with fine grain sizes could be obtained. The electrocaloric (EC) effect can be significantly enhanced from 0.83 K for conventional sintered Ba0.65Sr0.35TiO3 to 3.08 K for spark plasma‐sintered Mn‐doped Ba0.65Sr0.35TiO3 ceramics since the dielectric strength was dramatically increased. This work indicated an effective way to achieve the significantly enhanced EC effect in a lead‐free system at room temperature.
ISSN:0002-7820
1551-2916
DOI:10.1111/jace.12219