Forward domain growth on the non-polar cut of lithium niobate crystal during irradiation by focused ion beam

Abstract

We have studied the domain forward growth (growth in polar direction) on the non-polar cut of lithium niobate crystal as a result of focused ion beam irradiation. The nonlinear dose dependencies of the length and width of the wedge-like domains were observed. The domain growth was considered in terms of the kinetic approach. The spatial distribution of a polar component of the electric field produced by the injected charge was calculated using the point charge model. The proposed approach allowed estimating the amount of the effective charge at the irradiated surface about 1% of the irradiation dose.