High-pressure Raman study of a relaxor ferroelectric: The <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">Na</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>0.5</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">Bi</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>0.5</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi mathvariant="normal">TiO</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>3</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:math> perovskite

Kreisel, J.; M. Glazer, A.; Bouvier, Pierre; Lucazeau, G.

doi:10.1103/physrevb.63.174106

Public

High-pressure Raman study of a relaxor ferroelectric: The Na 0.5 Bi 0.5 TiO 3 perovskite

Published in Physical review. B, Condensed matter • Apr 5, 2001

Authors:

J. Kreisel

A. M. Glazer

Pierre Bouvier

Abstract

We report high-pressure Raman measurements (up to 19 GPa) on the perovskite-type relaxor ferroelectric sodium-bismuth-titanate, ${\mathrm{Na}}_{0.5}{\mathrm{Bi}}_{0.5}{\mathrm{TiO}}_{3}$ (NBT). Distinct changes in the Raman spectra have been analyzed in the light of a rhombohedral-to-orthorhombic $(...

Subject

Raman spectroscopy

Orthorhombic crystal system

Ferroelectricity

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