TY - JOUR
AU - C.S Ganpule
AU - V Nagarajan
AU - H Li
AU - A.S Ogale
AU - D.E Steinhauer
AU - S Aggarwal
AU - E Williams
AU - Ramamoorthy Ramesh
AU - P De Wolf
AB - 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.
BT - Applied Physics Letters
DO - 10.1063/1.126954
LA - eng
M1 - 2
N1 - cited By 149
N2 - 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.
PB - American Institute of Physics Inc.
PY - 2000
SP - 292
EP - 294
T2 - Applied Physics Letters
TI - Role of 90° domains in lead zirconate titanate thin films
VL - 77
SN - 00036951
ER -