%0 Journal Article %K Atomic force microscopy %K Epitaxial growth %K Piezoelectricity %K Ferroelectric thin films %K Electric conductivity %K Piezoresponse force microscopy (PFM) %K Relaxation processes %K Epitaxial ferroelectric thin films %A L Chen %A J Ouyang %A C.S Ganpule %A V Nagarajan %A Ramamoorthy Ramesh %A A.L Roytburd %B Applied Physics Letters %D 2004 %G eng %P 254-256 %R 10.1063/1.1633970 %T Formation of 90° elastic domains during local 180° switching in epitaxial ferroelectric thin films %V 84 %X A cylindrical 180° domain was stabilized by the formation of 90° domains to relax stress that arises due to the opposite signs of the converse piezoelectric effects in the switched 180° domain and the unswitched film surrounding. It was found that the formation of 90° domains can be effective mechanism for the piezostress relaxation in 180° domains and their stabilization.