Abstract
The characteristics of electron-beam domain writing (EBDW) on the polar and nonpolar surfaces of the field-cooled (FC) and zero-field cooled (ZFC) Sr0.61Ba0.39Nb2O6 (SBN) crystals are presented in the range of accelerating voltage U from 10 to 25 kV. The exposure characteristics of the domain diameter d and length Ld (when writing on the polar and nonpolar surfaces, respectively) were measured. With increasing exposure time, d tends to a saturation value, whereas Ld grows linearly, the frontal velocity Vf being of 40 μm/s. At U = 25 kV the achieved d and Ld are of 7 and 40 µm, respectively. The observed peculiar features of EBDW—specifically the domain widening with exposure times and the effect of the polarization state of the crystal on the domain stability—are accounted for by the relaxor features inherent to this material. The effects of electron-beam (EB) irradiation on the local hysteresis loops is evidence of a domain fixation.
Highlights
Ferroelectric nano- and microdomain patterning is demanded by various practical applications, primarily by the development of quasi-phase matching optical-frequency conversion [1] and high-density non-volatile memory [2]
The well-known approaches to the domain engineering at the submicro- and nanometric scales are the domain writing by dc-fields applied to the tip of an atomic force microscope (AFM) or by local irradiation by an electron beam (EB)
We present the results of studies in the domain formation under electron-beam (EB) irradiation in ferroelectric solid solutions Sr0.61 Ba0.39 Nb2 O6 (SBN)
Summary
Ferroelectric nano- and microdomain patterning is demanded by various practical applications, primarily by the development of quasi-phase matching optical-frequency conversion [1] and high-density non-volatile memory [2]. The well-known approaches to the domain engineering at the submicro- and nanometric scales are the domain writing by dc-fields applied to the tip of an atomic force microscope (AFM) or by local irradiation by an electron beam (EB). To develop these microscopic methods for the domain engineering, the mechanism of domain formation requires to be investigated. The vast majority of these studies was performed in single-domain LiNbO3 and LiTaO3 crystals. We present the results of studies in the domain formation under electron-beam (EB) irradiation in ferroelectric solid solutions Sr0.61 Ba0.39 Nb2 O6 (SBN)
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