Formation of Nanoscale Domain Structures and Abnormal Switching Kinetics in Lithium Niobate With Surface Layer Modified by Implantation of Copper Ions.

Autor: Nikolaeva, E. V., Shur, V. Ya., Dolbilov, M. A., Shishkin, E. I., Kuznetsov, D. K., Sarmanova, M. F., Plaksin, O. A., Gavrilov, N. V.
Předmět:
Zdroj: Ferroelectrics; 2008, Vol. 374 Issue 1, p73-77, 5p, 3 Diagrams, 1 Graph
Abstrakt: Pulsed implantation of Cu ions into single crystalline congruent lithium niobate resulted in extraordinary effects. First, surface nano-domain structures consisting of star-like domains with rays oriented along three Y directions were induced under the action of the pyroelectric field appeared during cooling after implantation pulse. These nano-domains served as nucleation sites for subsequent polarization reversal under external field. Second, jump-like domain wall motion led to formation of residual domain arrays along the staying positions of the wall. Third, the implantation led to suppression of screening of depolarizing field, due to formation of surface layer with suppressed polarization or non-ferroelectric. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index