UNSPECIFIED (1999) Quantitative x-ray Bragg diffraction topography of periodically domain-inverted LiNbO3. In: 4th Biennial Conference on High Resolution X-ray Diffraction and Topography (XTOP 98), SEP 09-11, 1998, UNIV DURHAM, DURHAM, ENGLAND.

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Abstract

Periodic domain inversion in a ferroelectric material (lithium niobate) has been studied using high-resolution x-ray diffraction topography. A domain-inverted structure of period 30 mu m was fabricated in a LiNbO3 crystal with a thickness of 300 mu m via electric-field poling. The synchrotron-radiation x-ray experiments were carried out at the ESRF micro-fluorescence, imaging and diffraction beamline (ID22). The experimental topograms and numerical simulations show that the image contrast can be explained in terms of a phase shift of the polarizability coefficient, chi(h), in the domain-inverted region relative to the non-inverted part. This phase shift, 1.72 pi, was found to be equivalent to the reflection, 00 (6) over bar, from the domain-inverted part of the structure rather than to the reflection, 006, from the non-inverted part. The numerical simulation shows that the width of the transition region between inverted and non-inverted domains (domain walls) is 0.3 mu m.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	Q Science > QC Physics
Journal or Publication Title:	JOURNAL OF PHYSICS D-APPLIED PHYSICS
Publisher:	IOP PUBLISHING LTD
ISSN:	0022-3727
Date:	21 May 1999
Volume:	32
Number:	10A Sp. Iss. SI
Number of Pages:	6
Page Range:	A160-A165
Publication Status:	Published
Title of Event:	4th Biennial Conference on High Resolution X-ray Diffraction and Topography (XTOP 98)
Location of Event:	UNIV DURHAM, DURHAM, ENGLAND
Date(s) of Event:	SEP 09-11, 1998
URI:	http://wrap.warwick.ac.uk/id/eprint/14461

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