| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1811160 | Physica B: Condensed Matter | 2011 | 4 Pages |
Barium titanate (BaTiO3) crystal samples with different distribution of oxygen vacancies were prepared through different thermal treatment processes. The influences of oxygen vacancies on the Raman spectra and X-ray photoelectron spectroscopy (XPS) spectra of BaTiO3 single crystals were studied comparatively. Raman measurements of fast-cooled BaTiO3, which annealed in vacuum and then cooled in air showed many different spectroscopic results comparing with as-received BaTiO3 sample. Raman measurements of slow-cooled BaTiO3, which annealed in vacuum and then cooled in tube furnace exhibited few spectroscopic differences. XPS measurements of as-received BaTiO3 sample and fast-cooled BaTiO3 sample confirmed that this discrepancy resulted from the surface phase of oxygen vacancy in BaTiO3.
