Mapping 180° polar domains using electron backscatter diffraction and dynamical scattering simulations

Matthew J Burch; Chris M Fancher; Srikanth Patala; Marc De Graef; Elizabeth C Dickey

doi:10.1016/j.ultramic.2016.11.013

Mapping 180° polar domains using electron backscatter diffraction and dynamical scattering simulations

Ultramicroscopy. 2017 Feb:173:47-51. doi: 10.1016/j.ultramic.2016.11.013. Epub 2016 Nov 18.

Authors

Matthew J Burch¹, Chris M Fancher¹, Srikanth Patala¹, Marc De Graef², Elizabeth C Dickey¹

Affiliations

¹ Department of Materials Science and Engineering, North Carolina State University, Raleigh, NC, USA.
² Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburg, PA, USA.

PMID: 27907831
DOI: 10.1016/j.ultramic.2016.11.013

Abstract

A novel technique, which directly and nondestructively maps polar domains using electron backscatter diffraction (EBSD) is described and demonstrated. Through dynamical diffraction simulations and quantitative comparison to experimental EBSD patterns, the absolute orientation of a non-centrosymmetric crystal can be determined. With this information, the polar domains of a material can be mapped. The technique is demonstrated by mapping the non-ferroelastic, or 180°, ferroelectric domains in periodically poled LiNbO₃ single crystals. Further, the authors demonstrate the possibility of mapping polarity using this technique in other polar materials system.

Keywords: EBSD; Electron backscatter diffraction; Ferroelectric; Ferroelectric domain.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.
Research Support, Non-U.S. Gov't