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TY - THES AU - Nahif, Farwah TI - The effect of Si and Y additives on the phase stability of Al 2 O 3 thin films VL - 2014,23 CY - Aachen PB - Shaker M1 - RWTH-CONV-144435 SN - 978-3-8440-2495-1 T2 - Materials chemistry dissertation SP - XIV, 92 S. : Ill., graph. Darst. PY - 2014 N1 - Zsfassung in dt. und engl. Sprache N1 - Zugl.: Aachen, Techn. Hochsch., Diss., 2013 AB - In this thesis, the effect of Si and Y alloying on the phase stability of Al2O3 polymorphs was investigated by ab initio calculations and experimental approach. In the first part the effect of Si alloying on the phase stability of Al2O3 polymorphs has been studied. Using density functional theory, the effect of Si on the stability and electronic structure of gamma- and alpha-Al2O3 has been investigated. The concentration range from 0 to 5 at. KW - Aluminiumoxide (SWD) KW - Thermodynamische Stabilität (SWD) LB - PUB:(DE-HGF)11 ; PUB:(DE-HGF)3 UR - https://publications.rwth-aachen.de/record/229465 ER -