Identification of ferroelectric domain structure sensitive phonon modes in potassium titanyl phosphate: A fundamental study
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
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. (C) 2016 AIP Publishing LLC.
Details
Original language | English |
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Article number | 044103 |
Number of pages | 8 |
Journal | Journal of applied physics |
Volume | 119 |
Issue number | 4 |
Publication status | Published - 28 Jan 2016 |
Peer-reviewed | Yes |
External IDs
Scopus | 84956693282 |
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Keywords
Keywords
- PERIODICALLY POLED KTIOPO4, ATOMIC-FORCE MICROSCOPY, RAMAN-SPECTROSCOPY, LITHIUM-NIOBATE, ELECTROMAGNETIC-WAVES, PPLN-MICROSTRUCTURES, UNIAXIAL CRYSTALS, SINGLE-CRYSTALS, ELECTRIC-FIELD, LINBO3