@article{33761,
  author = {C.S Ganpule and V Nagarajan and H Li and A.S Ogale and D.E Steinhauer and S Aggarwal and E Williams and Ramamoorthy Ramesh and P De Wolf},
  title = {Role of 90° domains in lead zirconate titanate thin films},
  abstract = {We report observations of the ferroelectric domain structure in epitaxial lead zirconate titanate (PbZr0.2Ti0.8O3) ferroelectric thin films using piezoresponse microscopy. By manipulating the film thickness, a uniform two-dimensional grid of 90° domains (a domains, i.e., c axis in the plane of the film) has been induced. Our studies show that the out of plane polarization direction in the film is preferentially oriented. 90° domains have been observed as regions of low piezoresponse, as compared to the fully c axis oriented regions. We have studied the influence of these 90° domains and the domain walls on the nucleation of polarization reversal. We observe that the nucleation occurs preferentially at 90° domain interfaces. Polarization reversal is seen to occur through the nucleation and subsequent growth of "semicircular/elliptical" reverse domains, which eventually consume the entire region as a function of reversal time. © 2000 American Institute of Physics.},
  year = {2000},
  journal = {Applied Physics Letters},
  volume = {77},
  number = {2},
  pages = {292-294},
  publisher = {American Institute of Physics Inc.},
  issn = {00036951},
  doi = {10.1063/1.126954},
  note = {cited By 149},
  language = {eng},
}