Domain reversal in stoichlometric LiTaO 3 prepared by vapor transport equilibration

L. Tian; Venkatraman Gopalan; Ludwig Galambos

doi:10.1063/1.1814436

Domain reversal in stoichlometric LiTaO ₃ prepared by vapor transport equilibration

L. Tian, Venkatraman Gopalan, Ludwig Galambos

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	4445-4447
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	19
DOIs	https://doi.org/10.1063/1.1814436
State	Published - Nov 8 2004

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.1814436

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title = "Domain reversal in stoichlometric LiTaO 3 prepared by vapor transport equilibration",

abstract = "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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AU - Tian, L.

AU - Gopalan, Venkatraman

AU - Galambos, Ludwig

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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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