Phonon interference in BaTiO3: High-pressure Raman study

Sood, AK and Narayana, Chandrabhas and Muthu, DVS and Jayaraman, A (1995) Phonon interference in BaTiO3: High-pressure Raman study. In: Physical Review B: Condensed Matter, 51 (14). pp. 8892-8896.

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Abstract

Raman experiments have been carried out on single crystals of BaTiO3 as a function of pressure up to 3.5 GPa across the ferroelectric (tetragonal) to paraelectric (cubic) phase transition. The unusual features in the Raman spectra associated with the interference effects due to coupling of the three A1(TO) phonons are studied quantitatively to obtain the pressure dependence of the line shape parameters and the coupling constants. The frequencies of the middle and highest-frequency modes as well as the linewidth of the middle mode show interesting pressure dependence.

Item Type:	Journal Article
Publication:	Physical Review B: Condensed Matter
Publisher:	The American Physical Society
Additional Information:	Copyright of this article belongs to The American Physical Society.
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	24 May 2011 04:43
Last Modified:	24 May 2011 04:43
URI:	http://eprints.iisc.ac.in/id/eprint/37859

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