Contrast in friction and its inversion observed on metal deposited SrTiO3(100) surfaces

Abstract

Articles you may be interested inTransition metal atoms pathways on rutile TiO2 (110) surface: Distribution of Ti3+ states and evidence of enhanced peripheral charge accumulation J. Chem. Phys. 138, 154711 (2013); 10.1063/1.4801025 Single crystal strontium titanate surface and bulk modifications due to vacuum annealing J. Appl. Phys. 110, 064107 (2011); 10.1063/1.3638692 Copper enhanced (111) texture in silver thin films on amorphous Si O 2 Growth and fractal scaling nature of copper thin films on TiN surface by metal organic chemical vapor deposition from hexafluoroacethylacetonate Cu (I) vinyltrimethylsilane J.Local variation of frictional properties associated with adatoms of Sr and Cu with SrTiO 3 (100) surfaces was investigated by friction force microscopy. On the surfaces partially covered with Sr, strong friction was observed on Sr adlayers. In contrast, the areas covered with Cu showed weaker friction than the substrates. We found that a thick Cu layer became easily worn by scanning, so the stepped surface of the substrate appeared in the scanned area. Furthermore, inversion of the contrast in friction between the SrO and TiO 2 terraces was observed in the same region during measurement. The origins of this friction behavior will be discussed in terms of the interaction between adsorbates and the substrate.