%0 Journal Article %K Electrochemistry %K Ions %K Mass spectrometry %K Spectrometry %K Crystallography %K Atomic force microscopy %K Surface chemistry %K Polarization %K Polarization switching %K Ferroelectricity %K Switching %K Long range interactions %K Ferroelectric films %K Ferroelectric switching %K Chlorine %K Ferroelectric thin films %K Optical switches %K Secondary emission %K Secondary ion mass spectrometry %K Chemical phenomena %K Electrochemical phenomena %K Significant surfaces %K Surface electrochemistry %K Time of flight secondary ion mass spectrometry %A A.V Ievlev %A P Maksymovych %A M Trassin %A J Seidel %A Ramamoorthy Ramesh %A S.V Kalinin %A O.S Ovchinnikova %B ACS Applied Materials and Interfaces %D 2016 %G eng %I American Chemical Society %P 29588-29593 %R 10.1021/acsami.6b10784 %T Chemical State Evolution in Ferroelectric Films during Tip-Induced Polarization and Electroresistive Switching %V 8