TY - JOUR
T1 - Domain reversal in stoichlometric LiTaO 3 prepared by vapor transport equilibration
AU - Tian, L.
AU - Gopalan, Venkatraman
AU - Galambos, Ludwig
N1 - Funding Information:
The authors would like to acknowledge Silicon Light Machines™ for providing the SLT-VTE samples, and Oxide Corporation for providing the NSLT-CZ. They also thank R. Miles, G. Miller, M. Fejer, and G. Foulon for bringing this material to our attention. This research was supported by the National Science Foundation though Grant Nos. DMR-9984691, DMR-0349632, ECS-9988685, and DMR-0103354.
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 -