Quantitative x-ray Bragg diffraction topography of periodically domain-inverted LiNbO3
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), UNIV DURHAM, DURHAM, ENGLAND, SEP 09-11, 1998. Published in: JOURNAL OF PHYSICS D-APPLIED PHYSICS, 32 (10A Sp. Iss. SI). A160-A165.Full text not available from this repository.
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|
|Official Date:||21 May 1999|
|Number:||10A Sp. Iss. SI|
|Number of Pages:||6|
|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|
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