Shape of isolated domains in lithium tantalate single crystals at elevated temperatures

Journal Article · Mon Dec 09 00:00:00 EST 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4846015· OSTI ID:22253837

Akhmatkhanov, A. R.; Baturin, I. S. ^[1]; Chezganov, D. S.; Lobov, A. I.; Smirnov, M. M. ^[1]

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1. Ferroelectric Laboratory, Institute of Natural Sciences, Ural Federal University, 620000 Ekaterinburg (Russian Federation)

The shape of isolated domains has been investigated in congruent lithium tantalate (CLT) single crystals at elevated temperatures and analyzed in terms of kinetic approach. The obtained temperature dependence of the growing domain shape in CLT including circular shape at temperatures above 190 °C has been attributed to increase of relative input of isotropic ionic conductivity. The observed nonstop wall motion and independent domain growth after merging in CLT as opposed to stoichiometric lithium tantalate have been attributed to difference in wall orientation. The computer simulation has confirmed applicability of the kinetic approach to the domain shape explanation.

• OSTI ID: 22253837
• Journal Information: Applied Physics Letters, Vol. 103, Issue 24; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPUTERIZED SIMULATION
LITHIUM
MONOCRYSTALS
SHAPE
TEMPERATURE DEPENDENCE
WALLS