Polarization switching of lithium niobate with giant internal field
Resource
Applied Physics Letters 74 (14): 2070-2072
Journal
Applied Physics Letters
Journal Volume
74
Journal Issue
14
Pages
2070-2072
Date Issued
1999
Date
1999
Author(s)
Abstract
A high-field analysis on the kinetics of polarization switching in congruent-grown Z-cut LiNbO3 crystals is reported. An axial anisotropy is observed in the switching current and the sweep rate of the lateral 180° domain motion on the poling direction. These observations are attributed to an internal field of 2.37 kV/mm associated with the nonstoichiometric point defects. This volume effect in turn modifies the sidewise 180° domain motion according to ν = μs[E-(Ec±Eint)] and results in a linear dependence of switching current and the sweep rate on E.
SDGs
Other Subjects
Anisotropy; Crystal growth; Electric currents; Ferroelectric materials; Point defects; Polarization switching; Lithium niobate
Type
journal article
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