Synthesis and Structure of Ultrathin Aluminosilicate Films


  • We acknowledge financial support from the Fonds der Chemischen Industrie and the EU Project GSOMEN. D.S. and J.W. thank the Alexander von Humboldt Foundation for fellowships. T.K.T. and S.K. acknowledge the International Max Planck Research School “Complex Surfaces in Materials Science”. We also thank the Norddeutscher Verbund für Hoch- und Höchstleistungsrechnen (HLRN) for computing time.


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Making films: Ordered aluminosilicate films are grown on a Mo(112) substrate, and their structures are determined through high-resolution experiments and density functional theory calculations. At low Al/Si ratios, aluminum atoms partially replace the silicon atoms of the silica structure. The resulting aluminosilicate film consists of a layer of corner-sharing {SiO4} and {AlO3} units (see picture; Mo gray, Al blue, Si orange, O red).