Ca3Co4O9 on SrTiO3 substrate
Data courtesy of Hanns-Ulrich Habermeier and Petar Yordanov, Max Planck Institute for Solid State Research, Stuttgart
TEM sample preparation and HRTEM image using a JEOL 4000FX TEM courtesy of Marion Kelsch and Peter A. van Aken, Stuttgart Center for Electron Microscopy, Max Planck Institute for Intelligent Systems, Stuttgart