Polarization reversal and domain kinetics in magnesium doped stoichiometric lithium tantalate

Journal Article · Mon Oct 13 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4898348· OSTI ID:22350910

Akhmatkhanov, A. R.; Baturin, I. S. ^[1]; Chuvakova, M. A. ^[1]

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

The polarization reversal process has been studied in 1 mol. % MgO doped stoichiometric lithium tantalate (LT) single crystal. The revealed stages of domain structure evolution represent (1) continuous nucleation and growth of isolated hexagonal domains with walls oriented along Y directions and (2) continuous motion of the plane domain walls stimulated by merging with isolated domains. The activation field dependence of the switching time has been revealed. The coercive field for quasi-static switching is about 150 V/mm. The bulk screening process has been analyzed. The main parameters of the switching process have been compared with other representatives of LT family.

• OSTI ID: 22350910
• Journal Information: Applied Physics Letters, Vol. 105, Issue 15; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL GROWTH
DOMAIN STRUCTURE
DOPED MATERIALS
LITHIUM COMPOUNDS
MAGNESIUM ADDITIONS
MAGNESIUM OXIDES
MONOCRYSTALS
POLARIZATION
SCREENING
STOICHIOMETRY
TANTALATES