Lattice dynamical properties of SrTiO3 thin films

A. A. Sirenko, I. A. Akimov, C. Bemhard, A. M. Clark, J. H. Hao, Weidong Si, X. X. Xi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

We report the experimental studies of the vibrational spectra of SrTiO3 films grown by pulsed laser deposition. Hainan scattering, with and without bias electric field, and Fourier-transform far-infrared ellipsometry between 30 and 700cm-1 have been utilized for investigation of the phonon behavior. These results are discussed in connection with the low-frequency dielectric properties of the SrTiO3 films. In the films, the soft mode reveals hardening compared to that in bulk crystals. This observation is in agreement with the Lyddane-Sachs-Teller formalism. The existence of local polar regions is proposed as an important factor determining the dielectric properties of ferroelectric thin films.

Original languageEnglish (US)
Title of host publicationFundamental Physics of Ferroelectrics 2000
Subtitle of host publicationAspen Center for Physics Winter Workshop
EditorsRonald E. Cohen, Richard A. Mewaldt
PublisherAmerican Institute of Physics Inc.
Pages201-217
Number of pages17
ISBN (Electronic)1563969599
DOIs
StatePublished - Sep 12 2000
Externally publishedYes
EventAspen Center for Physics Winter Workshop on Fundamental Physics of Ferroelectrics 2000 - Aspen, United States
Duration: Feb 13 2000Feb 20 2000

Publication series

NameAIP Conference Proceedings
Volume535
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceAspen Center for Physics Winter Workshop on Fundamental Physics of Ferroelectrics 2000
Country/TerritoryUnited States
CityAspen
Period2/13/002/20/00

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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