%0 Journal Article %K Atomic force microscopy %K Polarization %K Epitaxial growth %K Scanning tunneling microscopy (STM) %K Ferroelectric thin films %K Relative orientation %K Domain structure %K SrTiO %K Piezoresponse %K In-plane polarization %K Out-of-plane %K Polydomain %K Atomic force microscope (AFM) %K Differential signal %K Polarization vectors %A C.S Ganpule %A V Nagarajan %A B.K Hill %A A.L Roytburd %A E.D Williams %A Ramamoorthy Ramesh %A S.P Alpay %A A Roelofs %A R Waser %A L.M Eng %B Journal of Applied Physics %D 2002 %G eng %P 1477-1481 %R 10.1063/1.1421219 %T Imaging three-dimensional polarization in epitaxial polydomain ferroelectric thin films %V 91