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 language | English (US) |
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Pages (from-to) | 3705-3707 |
Number of pages | 3 |
Journal | Journal of Applied Physics |
Volume | 72 |
Issue number | 8 |
DOIs | |
State | Published - 1992 |
ASJC Scopus subject areas
- General Physics and Astronomy