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

81 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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@article{b9257cfcbec04f67bf148dd9de9889f2,

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.",

author = "L. Tian and Venkatraman Gopalan and Ludwig Galambos",

note = "Funding Information: The authors would like to acknowledge Silicon Light Machines{\texttrademark} 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. ",

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doi = "10.1063/1.1814436",

language = "English (US)",

volume = "85",

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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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DO - 10.1063/1.1814436

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

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Domain reversal in stoichlometric LiTaO ₃ prepared by vapor transport equilibration

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