TY - JOUR
T1 - Domain reversal in stoichlometric LiTaO 3 prepared by vapor transport equilibration
AU - Tian, L.
AU - Gopalan, Venkatraman
AU - Galambos, Ludwig
PY - 2004/11/8
Y1 - 2004/11/8
N2 - Domain reversal in stoichiometric lithium tantalate (LiTaO 3) single crystals prepared by vapor transport equilibrium (VTE) method was studied. Starting from a virgin VTE crystal and using water electrodes, the coercive fields were found to be 1.39±0.01 kV/cm and 1.23±0.01 kV/cm for the first poling and the second poling, respectively, indicating a built-in internal field of 0.08 kV/cm. The spontaneous polarization, P s was 55.2±0.5 μC/cm 2 and the Curie temperature was T c=701±2.5°C. The switching time, t s, exhibits an exponential dependence on the external field, E with activation energy of 10.84±0.22 kV/cm. No domain backswitching was observed. These properties are dramatically different from those of congruent and even near-stoichiometric compositions of lithium tantalate grown by Czhochralski method.
AB - Domain reversal in stoichiometric lithium tantalate (LiTaO 3) single crystals prepared by vapor transport equilibrium (VTE) method was studied. Starting from a virgin VTE crystal and using water electrodes, the coercive fields were found to be 1.39±0.01 kV/cm and 1.23±0.01 kV/cm for the first poling and the second poling, respectively, indicating a built-in internal field of 0.08 kV/cm. The spontaneous polarization, P s was 55.2±0.5 μC/cm 2 and the Curie temperature was T c=701±2.5°C. The switching time, t s, exhibits an exponential dependence on the external field, E with activation energy of 10.84±0.22 kV/cm. No domain backswitching was observed. These properties are dramatically different from those of congruent and even near-stoichiometric compositions of lithium tantalate grown by Czhochralski method.
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U2 - 10.1063/1.1814436
DO - 10.1063/1.1814436
M3 - Article
AN - SCOPUS:10844278151
VL - 85
SP - 4445
EP - 4447
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 19
ER -