Micro-Raman imaging of ferroelectric domain structures in the bulk of PMN-PT single crystals

Abstract

We demonstrate the application of confocal Raman microscopy (CRM) for nondestructive imaging of ferroelectric domains both at the surface and in the bulk of lead magnesium niobate-lead titanate (PMN-PT) ferroelectric single crystals. The studied model periodical domain structure was created at a [001] cut of tetragonal-phase PMN-PT crystal by the electron beam patterning technique. It was shown that the surface CRM domain image coincides in details with the image obtained by piezoresponse force microscopy. © 2019 by the authors. Licensee MDPI, Basel, Switzerland.The research was funded by Russian Foundation for Basic Research (grant 17-52-80116-BRICS_a), National Natural Science Foundation of China (grant 51761145024), Government of the Russian Federation (act 211, agreement 02.180 A03.21.0006), and Ministry of Science and Higher Education of the Russian Federation (state task No. 3.4993.2017/6.7)