LUNG-HAN PENGFang, Y.-C.Y.-C.FangLin, Y.-C.Y.-C.Lin2009-03-182018-07-062009-03-182018-07-06199900036951http://ntur.lib.ntu.edu.tw//handle/246246/145987https://www.scopus.com/inward/record.uri?eid=2-s2.0-0032620595&doi=10.1063%2f1.123760&partnerID=40&md5=15819f64a981f15219a53cfd41bc3d93A 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.application/pdf153202 bytesapplication/pdfen-US[SDGs]SDG7Anisotropy; Crystal growth; Electric currents; Ferroelectric materials; Point defects; Polarization switching; Lithium niobatejournal article10.1063/1.1237602-s2.0-0032620595http://ntur.lib.ntu.edu.tw/bitstream/246246/145987/1/04.pdf