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Zhang et al. Microstructures 2023;3:2023046 Microstructures
DOI: 10.20517/microstructures.2023.57

Research Article Open Access

Varied domain structures in 0.7Pb(Mg Nb )O 3
1/3
2/3
-0.3PbTiO single crystals
3
3
Dawei Zhang 1,2,# , Lei Wang 1,# , Linglong Li , Pankaj Sharma 4,5 , Jan Seidel 1,2
1
School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
2
ARC Centre of Excellence in Future Low-Energy Electronics Technologies, UNSW Sydney, Sydney, NSW 2052, Australia.
3
Key Laboratory of Quantum Materials and Devices of Ministry of Education, School of Physics, Southeast University, Nanjing
211189, Jiangsu, China.
4
College of Science and Engineering, Flinders University, Bedford Park, Adelaide, SA 5042, Australia.
5
Flinders Institute for Nanoscale Science and Technology, Flinders University, Adelaide, SA 5042, Australia.
#
Authors contributed equally.
Correspondence to: Prof. Jan Seidel, School of Materials Science and Engineering, UNSW Sydney, Sydney, NSW 2052, Australia.
E-mail: jan.seidel@unsw.edu.au
How to cite this article: Zhang D, Wang L, Li L, Sharma P, Seidel J. Varied domain structures in 0.7Pb(Mg Nb )O -0.3PbTiO
1/3 2/3 3 3
single crystals. Microstructures 2023;3:2023046. https://dx.doi.org/10.20517/microstructures.2023.57
Received: 13 Oct 2023 First Decision: 13 Nov 2023 Revised: 20 Nov 2023 Accepted: 28 Nov2023 Published: 1 Dec 2023

Academic Editor: Shujun Zhang Copy Editor: Fangyuan Liu Production Editor: Fangyuan Liu

Abstract
Single crystals of 0.7Pb(Mg Nb )O -0.3PbTiO (PMN-30PT) with a composition close to the morphotropic
2/3
3
3
1/3
phase boundary have demonstrated remarkable electromechanical properties, stimulating intensive research
interest in the field of piezoelectrics. Domain structures have long been associated with their overall piezoelectric
properties, thereby garnering particular research interest for the enhancement of piezoelectric properties. Here, we
report on three distinct domain structures in this material. Through a combination of X-ray diffraction reciprocal
space mapping and piezoresponse force microscopy measurements, an M crystal structure has been confirmed.
A
The three-dimensional polar vectors of the three domain structures have been reconstructed with two 4M and
A
one 2M domain structures. Correlations between different domain structures and their local electrical switching
A
properties have been revealed. Our study of the PMN-30PT single crystal examines diverse domain structures at
the mesoscale in detail, which provides valuable insight into the relationship between structures and properties of
the material.
Keywords: Ferroelectrics, PMN-PT single crystal, domain structures, piezoresponse force microscopy

© The Author(s) 2023. Open Access This article is licensed under a Creative Commons Attribution 4.0
International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing,
adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as
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