Abstract
The SrBi2Ta2O9 films of (200) and (0010) predominant orientation were prepared by metalorganic decomposition. Ellipsometric spectra of these oriented films were measured and analyzed in the range of photon energy from 2 to 5.5eV. The ellipsometric spectra of the (200)-predominant SBT films are different from those of the (0010)-predominant films. Basing on a simplified model, the effective refractive index n and the effective extinction coefficient k of both oriented SBT films were obtained. In the photon energy range of 2–5.5eV, the n value of the (0010)-predominant film is bigger than that of the (200)-predominant film (δn / 0.2 at 500nm). The band gap of the SBT thin films is found to be about 3.8eV.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
