Ferroelectric domain patterns in barium titanate single crystals studied by means of digital holographic microscopy

In this Article, we report on the observation of ferroelectric domain pattern in the whole volume of the ferroelectric barium titanate single crystal by means of the digital holographic microscopy (DHM). Our particular implementation of DHM is based on the Mach-Zehnder interferometer and the numeric...

Full description

Saved in:
Bibliographic Details
Published in:arXiv.org 2016-05
Main Authors: Mokry, Pavel, Psota, Pavel, Steiger, Katerina, Vaclavik, Jan, Dolecek, Roman, Vapenka, David, Ledl, Vit
Format: Article
Language:English
Subjects:
Barium titanates
Domain walls
Ferroelectric domains
Ferroelectric materials
Ferroelectricity
Lithium niobates
Mach-Zehnder interferometers
Microscopy
Perovskites
Single crystals
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this Article, we report on the observation of ferroelectric domain pattern in the whole volume of the ferroelectric barium titanate single crystal by means of the digital holographic microscopy (DHM). Our particular implementation of DHM is based on the Mach-Zehnder interferometer and the numerical processing of data employs the angular spectrum method. A modification of the DHM technique, which allows a fast and accurate determination of the domain walls, i.e. narrow regions separating the antiparallel domains, is presented. Accuracy and sensitivity of the method are discussed. Using this approach, the determination of important geometric parameters of the ferroelectric domain patterns (such as domain spacing or the volume fraction of the anti-parallel domains) is possible. In addition to the earlier DHM studies of domain patterns in lithium niobate and lithium tantalate, our results indicate that the DHM is a convenient method to study a dynamic evolution of ferroelectric domain patterns in all perovskite single crystals.
ISSN:2331-8422
DOI:10.48550/arxiv.1601.02858