Electron-Beam Domain Patterning in Sr0.61Ba0.39Nb2O6 Crystals
| Autor: | L. S. Kokhanchik, T. R. Volk, Lyudmila I Ivleva, Eugene B. Yakimov, Radmir V. Gainutdinov, Yadviga V. Bodnarchuk |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
ferroelectric domains
Materials science Surfaces and Interfaces Polarization (waves) Acceleration voltage Molecular physics Surfaces Coatings and Films Crystal Hysteresis lcsh:TA1-2040 Domain (ring theory) Materials Chemistry Polar electron-beam irradiation Irradiation lcsh:Engineering (General). Civil engineering (General) strontium barium niobate Saturation (magnetic) |
| Zdroj: | Coatings Volume 10 Issue 3 Coatings, Vol 10, Iss 3, p 299 (2020) |
| ISSN: | 2079-6412 |
| DOI: | 10.3390/coatings10030299 |
| Popis: | 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 &mu m/s. At U = 25 kV the achieved d and Ld are of 7 and 40 µ m, respectively. The observed peculiar features of EBDW&mdash specifically the domain widening with exposure times and the effect of the polarization state of the crystal on the domain stability&mdash 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|