Issue 37, 2017

Large strain and strain memory effect in bismuth ferrite lead-free ceramics

Abstract

An electric-field-induced strain in ferroelectric materials has extensive applications in actuators and sensors. BiFeO3 (BFO) ceramic is a promising candidate for high-temperature electromechanical coupling applications due to its exceptionally high Curie temperature (Tc ∼ 825 °C). Here, we reported an enhanced electric-field-induced strain in defective BFO ceramics. These defective BFO ceramics exhibit highly asymmetric SE loops along with a strain memory effect. A large peak-to-peak strain (Sp–p) of 0.66% is achieved in the Bi2O3-deficient sample with x = −0.15, which is the largest strain value ever obtained in BFO-based ceramics. A strain shape memory of 0.24% is observed in samples with x = 0.09 due to the presence of defects and the orientation of the defect-dipoles. The combination of large strain and high TC would make the defective BiFeO3-based ceramics one of the most important candidates for high-temperature electromechanical coupling applications.

Graphical abstract: Large strain and strain memory effect in bismuth ferrite lead-free ceramics

Article information

Article type
Communication
Submitted
22 июл 2017
Accepted
16 авг 2017
First published
17 авг 2017

J. Mater. Chem. C, 2017,5, 9528-9533

Large strain and strain memory effect in bismuth ferrite lead-free ceramics

J. Lv, W. Gao, J. Li, T. Li, C. Long, X. Lou and J. Wu, J. Mater. Chem. C, 2017, 5, 9528 DOI: 10.1039/C7TC03282J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements