Pressure dependence of optical absorption in PbTiO3 to 35 GPa: Observation of the tetragonal-to-cubic phase transition

C. S. Zha, A. G. Kalinichev, Jay D Bass, C. T.A. Suchicital, D. A. Payne

Research output: Contribution to journalArticle

Abstract

Optical absorption of the polar material PbTiO3 has been studied up to 35 GPa (350 kbar) in the visible range of wavelengths using a single crystal samples compressed in a diamond anvil high pressure cell. The absorption edge shifts toward lower energies with increasing pressure. Pressure dependence of the absorption edge undergoes significant changes at about 11.5±0.3 GPa, close to the previously identified tetragonal-cubic phase transition. The change in pressure dependence of the spectra is consistent with second-order character of the transition.

Original languageEnglish (US)
Pages (from-to)3705-3707
Number of pages3
JournalJournal of Applied Physics
Volume72
Issue number8
DOIs
StatePublished - Dec 1 1992

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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