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 ΔTE=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.

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.

Copyright Owner

The American Ceramic Society

Language

en

File Format

application/pdf

Published Version

Share

COinS