Structure and composition of titanium nanocluster films prepared by a gas aggregation cluster source

0366866 - ÚMCH 2012 RIV US eng J - Journal Article
Drabik, M. - Choukourov, A. - Artemenko, A. - Polonskyi, O. - Kylian, O. - Kousal, J. - Nichtová, L. - Cimrová, Věra - Slavínská, D. - Biederman, H.
Structure and composition of titanium nanocluster films prepared by a gas aggregation cluster source.
Journal of Physical Chemistry C. Roč. 115, č. 43 (2011), s. 20937-20944. ISSN 1932-7447. E-ISSN 1932-7455
R&D Projects: GA MŠMT(CZ) 1M06031
Institutional research plan: CEZ:AV0Z40500505
Keywords : beam deposition * TiO2 * oxidation
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 4.805, year: 2011

Structure and composition of titanium nanocluster films were studied on samples prepared by a gas aggregation cluster source based on a planar magnetron following the Haberland concept. Elemental composition of the nanoclusters was studied by X-ray photoelectron spectroscopy, their crystal structure was determined by X-ray diffraction, and their optical properties were characterized by UV-vis spectroscopy. Both as-prepared (without any additional postdeposition treatment) and annealed (in air at 420°C for 1 h) films were studied. Titanium nanocluster films were found to oxidize immediately when exposed to ambient atmosphere. The as-prepared nanoclusters were composed of both Ti and TiO2. The transformation from a metal to an oxide structure of the nanoclusters upon annealing ends up in a semistable anatase crystal form of TiO2 with traces of a thermodynamically stable rutile crystal form.
Permanent Link: http://hdl.handle.net/11104/0201707