Raman Study of Oxygen Reduced and Re-Oxidized Strontium Titanate

Dmitri Tenne, I. E. Gonenli, A. Soukiassian, D. G. Schlom, S. M. Nakhmanson, K. M. Rabe, X. X. Xi

Research output: Contribution to journalArticlepeer-review

Abstract

We report Raman study of oxygen-reduced single crystal strontium titanate. Oxygen reduction leads to the appearance of the forbidden first order Raman peaks, as well as new spectral features attributed to the local vibrational modes associated with oxygen vacancies. This assignment is supported by ab initio calculations of phonon modes in SrTiO 3 with introduced oxygen vacancies. Raman studies of re-oxidized samples show the same spectra as the initial single crystals. Comparison of Raman spectra of SrTiO 3 thin films and reduced SrTiO 3 single crystals demonstrates the importance of other factors such as polar grain boundaries in the lattice dynamical behavior of thin films.

Original languageAmerican English
JournalPhysics Faculty Publications and Presentations
StatePublished - 1 Jan 2007

EGS Disciplines

  • Physics

Fingerprint

Dive into the research topics of 'Raman Study of Oxygen Reduced and Re-Oxidized Strontium Titanate'. Together they form a unique fingerprint.

Cite this