Confocal Raman spectroscopy is applied to identify ferroelectric domain structure sensitive phonon modes in potassium titanyl phosphate. Therefore, polarization-dependent measurements in various scattering configurations have been performed to characterize the fundamental Raman spectra of the material. The obtained spectra are discussed qualitatively based on an internal mode assignment. In the main part of this work, we have characterized z-cut periodically poled potassium titanyl phosphate in terms of polarity- and structure-sensitive phonon modes. Here, we find vibrations whose intensities are linked to the ferroelectric domain walls. We interpret this in terms of changes in the polarizability originating from strain induced by domain boundaries and the inner field distribution. Hence, a direct and 3D visualization of ferroelectric domain structures becomes possible in potassium titanyl phosphate.
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28 January 2016
Research Article|
January 28 2016
Identification of ferroelectric domain structure sensitive phonon modes in potassium titanyl phosphate: A fundamental study
M. Rüsing
;
M. Rüsing
a)
Department Physik,
Universität Paderborn
, 33095 Paderborn, Germany
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C. Eigner;
C. Eigner
Department Physik,
Universität Paderborn
, 33095 Paderborn, Germany
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P. Mackwitz;
P. Mackwitz
Department Physik,
Universität Paderborn
, 33095 Paderborn, Germany
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G. Berth;
G. Berth
Department Physik,
Universität Paderborn
, 33095 Paderborn, Germany
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C. Silberhorn;
C. Silberhorn
Department Physik,
Universität Paderborn
, 33095 Paderborn, Germany
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A. Zrenner
A. Zrenner
Department Physik,
Universität Paderborn
, 33095 Paderborn, Germany
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a)
Electronic mail: [email protected]
J. Appl. Phys. 119, 044103 (2016)
Article history
Received:
September 15 2015
Accepted:
January 18 2016
Citation
M. Rüsing, C. Eigner, P. Mackwitz, G. Berth, C. Silberhorn, A. Zrenner; Identification of ferroelectric domain structure sensitive phonon modes in potassium titanyl phosphate: A fundamental study. J. Appl. Phys. 28 January 2016; 119 (4): 044103. https://doi.org/10.1063/1.4940964
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