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|Title:||Precise determination of phonon constants in lead-free monoclinic (K0.5Na0.5)NbO3 single crystals|
|Author:||Rafiq, Muhammad Asif|
Costa, M. Elisabete
Vilarinho, Paula M.
|Publisher:||AMER INST PHYSICS|
|Abstract:||A polarized Raman analysis of ferroelectric (K0.5Na0.5)NbO3 (KNN) single crystals is presented. The Raman modes of KNN single crystals are assigned to the monoclinic symmetry. Angular-dependent intensities of A', A\", and mixed A' + A\" phonons have been theoretically calculated and compared with the experimental data, allowing the precise determination of the Raman tensor coefficients for (non-leaking) modes in single-domain monoclinic KNN. This study is the basis for non-destructive assessments of domain distribution by Raman spectroscopy in KNN-based lead-free ferroelectrics. (C) 2014 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.|
|Appears in Collections:||CICECO - Artigos|
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|Precise determination of phonon constants in lead-free monoclinic (K 0.5Na 0.5)NbO 3single crystals_10.10631.4860416.pdf||1.34 MB||Adobe PDF||View/Open|
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