TY - JOUR
KW - Thin films
KW - Electric fields
KW - Polarization
KW - Domain walls
KW - Switching
KW - Ferroelectric films
KW - Ferroelectric thin films
KW - Piezoresponse force microscopy (PFM)
KW - Bottom electrodes
KW - Depolarizing fields
KW - In-plane polarization
KW - Initial orientation
KW - Out-of-plane
KW - Polydomain
KW - Transient polarization
KW - Depolarization
AU - A Roelofs
AU - N.A Pertsev
AU - R Waser
AU - F Schlaphof
AU - L.M Eng
AU - C Ganpule
AU - V Nagarajan
AU - Ramamoorthy Ramesh
AB - Switching of the out-of-plane and in-plane polarizations in polydomain epitaxial PbZr0.2Ti0.8O3 thin films is studied using three-dimensional piezoresponse force microscopy (PFM). It is found that, under an electric field induced between the PFM tip and the bottom electrode, the 180° switching occurs in both c and a domains. After the removal of this field, the spontaneous reversal of the out-of-plane and in-plane polarizations back to the initial orientations takes place, evolving via heterogeneous development of antiparallel 180° domains. The switching of in-plane polarization inside a domains and the preferential formation of reversed 180° domains at 90° domain walls are explained by the effects of the depolarizing fields caused by transient polarization charges appearing on these domain walls. © 2002 American Institute of Physics.
BT - Applied Physics Letters
DO - 10.1063/1.1448653
LA - eng
M1 - 8
N1 - cited By 93
N2 - Switching of the out-of-plane and in-plane polarizations in polydomain epitaxial PbZr0.2Ti0.8O3 thin films is studied using three-dimensional piezoresponse force microscopy (PFM). It is found that, under an electric field induced between the PFM tip and the bottom electrode, the 180° switching occurs in both c and a domains. After the removal of this field, the spontaneous reversal of the out-of-plane and in-plane polarizations back to the initial orientations takes place, evolving via heterogeneous development of antiparallel 180° domains. The switching of in-plane polarization inside a domains and the preferential formation of reversed 180° domains at 90° domain walls are explained by the effects of the depolarizing fields caused by transient polarization charges appearing on these domain walls. © 2002 American Institute of Physics.
PY - 2002
SP - 1424
EP - 1426
T2 - Applied Physics Letters
TI - Depolarizing-field-mediated 180° switching in ferroelectric thin films with 90° domains
VL - 80
SN - 00036951
ER -