Polarization leakage and asymmetric Raman line broadening in microwave dielectric ZrTiO4
SCIE
SCOPUS
- Title
- Polarization leakage and asymmetric Raman line broadening in microwave dielectric ZrTiO4
- Authors
- Kim, YK; Jang, HM
- Date Issued
- 2003-08
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Abstract
- Nano-scale structural characteristics and broken symmetry associated with the formation of incommensurately ordered phase from the high-temperature disordered phase of ZrTiO4 were studied using Raman scattering method. For this purpose, the Raman peak at 815 cm(-1) caused by the A(g)-symmetry normal mode was employed as a nano-structural probe. A polarization leakage was observed in the polarized Raman spectra of single-crystal ZrTiO4. The observed leakage was attributed to the random orientation of the short-range ordered domains in the beginning stage of the normal-to-incommensurate transformation. The computational result based on the phonon-confinement model indicated that the asymmetric Raman line broadening in the incommensurately ordered ZrTiO4 single-crystal was directly related to the existence of the faulted boundary having the average periodicity of 3.9 nm along the a-axis. (C) 2003 Elsevier Science Ltd. All rights reserved.
- Keywords
- nanostructures; oxides; Raman spectroscopy; SPECTRAL CHARACTERIZATION; VIBRATIONAL-SPECTRA; SYSTEM ZRO2-TIO2; PHASE-TRANSITION; SCATTERING; CERAMICS; COMMENSURATE; NANOCRYSTALS; TEMPERATURE; DISORDER
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/18454
- DOI
- 10.1016/S0022-3697(0
- ISSN
- 0022-3697
- Article Type
- Article
- Citation
- JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, vol. 64, no. 8, page. 1271 - 1278, 2003-08
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- There are no files associated with this item.
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