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The study of structural and optical properties of TiO2:Tb thin films

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Author(s): Agnieszka Borkowska | Jaroslaw Domaradzki | Danuta Kaczmarek | Damian Wojcieszak

Journal: Optica Applicata
ISSN 0078-5466

Volume: 37;
Issue: 4;
Start page: 335;
Date: 2007;
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Keywords: terbium | TiO2 | thin films | magnetron sputtering

ABSTRACT
This work presents the study of the structural and optical properties of TiO2:Tb thin films deposited on Si (100) and SiO2 substrates by magnetron sputtering from metallic Ti-Tb mosaic target. Thin films were studied by means of scanning electron microscopy with energy disperse spectrometer (SEM-EDS), atomic force microscopy (AFM), X-ray diffraction (XRD) and the optical transmission method. From SEM-EDS the total amount of Tb concentration was determined. XRD analysis revealed the existence of crystalline TiO2 in the form of anatase and rutile, depending on Tb amount in the examined samples. The optical transmission method has shown that Tb doping shifts the fundamental absorption edge of TiO2 toward the longer wavelength region.
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