Electron beam poling of [001]c-poled PMN-39PT single crystal

The equipment of the Ural Center for Shared Use “Modern Nanotechnology” UrFU has been used. The research was made possible in part by Government of the Russian Federation (Act 211, Agreement 02.180 A03.21.0006) and RFBR (grant 17-52-80116-BRICS_a)

Shapes change of PbO nanoparticles produced by laser ablation in liquid

Production of non-spherical crystalline nanoparticles by laser ablation in liquid has been demonstrated recently. Here we studied the shape variety of PbO nanoparticles prepared by laser ablation in deionized water and IPA. The key role of water in the formation of PbO non-spherical nanostructures was demonstrated. Only spherical nanoparticles have been obtained in isopropyl alcohol (IPA). PbO non-spherical nanostructures have been formed only in presence of water, which supports the growth mechanism by oxidation. Using mixture of IPA and water in various proportions and revealing the time and temperature dependences of non-spherical nanostructure morphology can be used for controlled growth of PbO non-spherical nanostructures. © Published under licence by IOP Publishing Ltd.Government Council on Grants, Russian FederationMinistry of Science and Higher Education of the Russian Federation: 3.4993.2017/6.7, 3.9534.2017/8.9The work has been supported in part by the Ministry of Science and Higher Education of the Russian Federation (projects 3.9534.2017/8.9 and 3.4993.2017/6.7) and by Government of the Russian Federation (act 211, agreement 02.A03.21.0006). The equipment of the Ural Centre for Shared Use “Modern Nanotechnology” Ural Federal University was used

Electron beam domain patterning in thin plates of magnesium doped lithium niobate

The electron beam domain patterning has been studied in the thin crystalline plates of MgO-doped lithium niobate covered by artificial dielectric layer. The creation of the through periodic domain structures with vertical domain walls and a period down to 2 μm was demon-strated in the thin plates.The equipment of the Ural Center for Shared Use “Modern nanotechnology” Ural Federal University was used. The research was made possible by the Russian Science Foundation (grant № 17-72-10152)

E-beam domain patterning in thin plates of MgO-doped LiNbO3

The equipment of the Ural Center for Shared Use “Modern nanotechnology” Ural Federal University was used. The research was made possible by the Russian Science Foundation (grant № 17-72-10152)

E-beam domain patterning in thin plates of MgO-doped LiNbO3

The features of the domain patterning in thin lithium niobate crystals were studied. It was shown that decrease in crystal plate thickness led to domain size increase due to limitation of forward growth. The domain size weakly depended on electron energy due to equality of screening charge value at the same doses and various accelerating voltages. The weak dependence of domain sizes on pattern period was attributed to absence of electrostatic interaction of domain walls. The possibility of creation of the through periodical domain structures with the vertical domain walls and period down to 2 μm in thin crystal was demonstrated. © 2019, © 2019 Taylor & Francis Group, LLC

Domain structure formation by local switching in the ion sliced lithium niobate thin films

The creation of the periodical domain patterns with a submicron period in lithium niobate on insulator (LNOI) wafers is a key problem for nonlinear-optical applications, including second harmonic generation, backscattering optical parametric oscillator, etc. We have experimentally studied the domain formation and evolution during local polarization reversal in Z+ LNOI wafers with a metal bottom electrode. It has been shown that domain growth occurs by the formation of the spikes at the charged domain wall (CDW). The complicated shape of isolated domains with a jagged CDW has been revealed. The obtained weak domain-domain interaction has been attributed to effective bulk screening by charge injection. The revealed dependence of the domain sizes on humidity caused by the adsorbed water layer should be taken into account during periodical poling. © 2020 Author(s).The equipment of the Ural Center for Shared Use “Modern Nanotechnology” Ural Federal University was used. The authors thank E. A. Linker for the help in processing of the 3D model. This research was made possible by RFBR (Grant Nos. 19-32-90052 and 20-42-660025)

Local Switching Polarization on the Non-Polar Cut of Lithium Niobate with Controlled Inhomogeneous Stoichiometry Deviation

We investigated direct domain growth at non-polar cut of lithium niobate with inhomo-geneous composition distribution along polar axis by application of electric pulses using scanning probe microscope. Dependency of domains parameters from the value of stoichiometry deviation has been shown.В работе использовалось оборудование Уральского центра коллективного пользования «Современные Нанотехнологии» УрФУ. Исследование выполнено при финансовой поддержке РФФИ в рамках научного проекта 19-32-90050

Domain structure formation by electron beam irradiation in lithium niobate and lithium tantalate crystals at elevated temperatures

The equipment of the Ural Center for Shared Use “Modern nanotechnology” Ural Federal University was used. The research was made possible by the Russian Science Foundation (Grant № 17-72-10152)

Local polarization reversal in relaxor SBN single crystals by electron and ion beam irradiation

The equipment of the Ural Center for Shared Use “Modern Nanotechnology” UrFU was used. The research was made possible by the Russian Science Foundation (grant № 19-72-00008)

Electron beam periodical poling in [001]c-poled PMN-39PT single crystal

The equipment of the Ural Center for Shared Use “Modern Nanotechnology” UrFU has been used. The research was made possible in part by RFBR (grant 17-52-80116-BRICS_a)