Title
Large electrocaloric responses in [Bi1/2(Na,K)1/2]TiO3‐based ceramics with giant electro‐strains
Campus Units
Materials Science and Engineering
Document Type
Article
Publication Version
Accepted Manuscript
Publication Date
5-2017
Journal or Book Title
Journal of the American Ceramic Society
Volume
100
Issue
5
First Page
2088
Last Page
2097
DOI
10.1111/jace.14777
Abstract
The electrocaloric effect (ECE) is investigated through indirect measurement in two lead‐free [Bi1/2(Na,K)1/2]TiO3‐based ceramics that were previously reported to display giant electro‐strains. In the Nb‐doped ceramic, denoted as BNKT‐2.5Nb, a decent temperature change of ΔT=1.85 K and an electrocaloric responsivity of ΔT/ΔE=0.37 (10−6Km V−1) are found around room temperature (32°C). While in the Ta‐doped ceramic, BNKT‐1.5Ta, a wide operation temperature range (Tspan ~55 K) is observed near room temperature. Additional electrical measurements, as well as transmission electron microscopy experiments, are performed to identify the mechanisms of the ECE in both ceramics.
Copyright Owner
The American Ceramic Society
Copyright Date
2017
Language
en
File Format
application/pdf
Recommended Citation
Fan, Zhongming; Liu, Xiaoming; and Tan, Xiaoli, "Large electrocaloric responses in [Bi1/2(Na,K)1/2]TiO3‐based ceramics with giant electro‐strains" (2017). Materials Science and Engineering Publications. 321.
https://lib.dr.iastate.edu/mse_pubs/321
Comments
This is the peer-reviewed version of the following article: Fan, Zhongming, Xiaoming Liu, and Xiaoli Tan. "Large electrocaloric responses in [Bi1/2 (Na, K) 1/2] TiO3‐based ceramics with giant electro‐strains." Journal of the American Ceramic Society 100, no. 5 (2017): 2088-2097, which has been published in final form at DOI: 10.1111/jace.14777. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.