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Oxide thin film properties

Chapter 4 focuses on the various physico-chemical properties of thin films, and in particular on their thickness dependence. It aims at bridging the gap between the well established knowledge acquired on oxide surfaces and truely two-dimensional oxides. It reviews the consequences of the reduced local environment of their atoms and of the confinement effects due to their finite thickness. It analyzes the various manifestations of structural, electronic, vibrational, ferroelectric and magnetic modifications. A special focus is put on the interaction of thin films with metal or oxide substrates, possibly leading to interfacial dislocations, electron transfer or mixing, with consequences on their chemical reactivity.