ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
SrBi2Nb2O9 (SBN) thin films were prepared on fused quartz substrates at room temperature bypulsed laser deposition. The crystallization behavior and surface morphology were studied at variousoxygen pressures by XRD and AFM. The results indicated that the films had polycrystalline structurewith a single layered perovskite phase, and exhibited higher crystalline quality, less rough surfacemorphology, and larger grain size with increasing oxygen pressure. The optical transmittance of thesamples was measured in the wavelength range 200-900 nm, and the dispersion relation of refractiveindices and wavelength was found to follow the single electron oscillation model. The energy gap of SBNfilms grown at oxygen pressure of 5 Pa was estimated to be around 3.88 eV by assuming a direct transitionbetween valence and conduction bands
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.305.pdf
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