Zobrazeno 1 - 10
of 200
pro vyhledávání: '"Leonid Vasylechko"'
Autor:
Dmytro Sugak, Leonid Vasylechko, Volodymyr Sydorchuk, Stepan Hurskyy, Andriy Luchechko, Ihor I. Syvorotka, Andrey Lakhnik, Uliana Yakhnevych, Vasyl Hreb, Serhii Ubizskii, Yuriy Suhak
Publikováno v:
Powders, Vol 2, Iss 3, Pp 562-577 (2023)
In the current work, nanocrystalline powders with different compositions, namely Li0.98Pr0.02NbO3, Li0.93Pr0.02Mg0.05NbO3 and Li0.98Pr0.02TaO3 were synthesized for the first time using the method of high-energy ball milling of the starting materials
Externí odkaz:
https://doaj.org/article/18ca5180e4724646b3bb93ef0b24390d
Autor:
Andriy Luchechko, Vyacheslav Vasyltsiv, Markiyan Kushlyk, Vasyl Hreb, Dmytro Slobodzyan, Leonid Vasylechko, Yaroslav Zhydachevskyy
Publikováno v:
Materials, Vol 17, Iss 6, p 1391 (2024)
Undoped and Mg2+-doped β-Ga2O3-20% In2O3 solid solution microcrystalline samples were synthesized using the high-temperature solid-state chemical reaction method to investigate the influence of native defects on structural, luminescent, and electric
Externí odkaz:
https://doaj.org/article/b9082170c6454583845672936e43e25b
Autor:
Jan Klenen, Felix Sauerwein, Laura Vittadello, Karsten Kömpe, Vasyl Hreb, Volodymyr Sydorchuk, Uliana Yakhnevych, Dmytro Sugak, Leonid Vasylechko, Mirco Imlau
Publikováno v:
Nanomaterials, Vol 14, Iss 3, p 317 (2024)
The tuning of second (SHG) and third (THG) harmonic emission is studied in the model system LiNb 1−xTa xO 3 (0≤x≤1, LNT) between the established edge compositions lithium niobate (LiNbO 3, x=0, LN) and lithium tantalate (LiTaO 3, x=1, LT). Thus
Externí odkaz:
https://doaj.org/article/41209fcb7cd44acfa5e4a4160a1900bc
Autor:
Maria Mora, Andriy Durygin, Vadym Drozd, Shanece Esdaille, Jiuhua Chen, Surendra Saxena, Xue Liang, Leonid Vasylechko
Publikováno v:
Crystals, Vol 13, Iss 7, p 1060 (2023)
Gadolinium aluminate perovskite (GdAlO3) was studied at high pressures of up to 23 GPa in a diamond anvil cell (DAC) using monochromatic synchrotron X-ray powder diffraction. Evidence of a pressure-induced phase transformation from orthorhombic (Pbnm
Externí odkaz:
https://doaj.org/article/0896799bf3064cdab7f182cf83274ca1
Autor:
Leonid Vasylechko, Vitalii Stadnik, Vasyl Hreb, Yaroslav Zhydachevskyy, Andriy Luchechko, Vitaliy Mykhaylyk, Hans Kraus, Andrzej Suchocki
Publikováno v:
Inorganics, Vol 11, Iss 5, p 205 (2023)
Calcium dialuminate, CaAl4O7, nanopowders with a grossite-type structure, doped with chromium ions, were synthesized via the combined sol–gel solution combustion method. The evolution of phase composition, crystal structure, and microstructural par
Externí odkaz:
https://doaj.org/article/41e0835353064ba08c9c93816e686f3d
Autor:
Vitalii Stadnik, Vasyl Hreb, Andriy Luchechko, Yaroslav Zhydachevskyy, Andrzej Suchocki, Leonid Vasylechko
Publikováno v:
Inorganics, Vol 9, Iss 12, p 89 (2021)
A series of strontium dialuminate SrAl4O7 nanopowders with the grossite-type structure doped with chromium and manganese ions were synthesized by the combined sol–gel solution combustion method with use of two different strontium salts. The Cr3+ an
Externí odkaz:
https://doaj.org/article/cb306f45745c4638a421a21acf520c81
Autor:
Leonid Vasylechko, Volodymyr Sydorchuk, Andrey Lakhnik, Yuriy Suhak, Damian Wlodarczyk, Stepan Hurskyy, Uliana Yakhnevych, Yaroslav Zhydachevskyy, Dmytro Sugak, Ihor I. Syvorotka, Ivan Solskii, Oleh Buryy, Andrzej Suchocki, Holger Fritze
Publikováno v:
Crystals, Vol 11, Iss 7, p 755 (2021)
Nanocrystalline compounds LiNb1−xTaxO3 of various compositions (x = 0, 0.25, 0.5, 0.75, 1) were synthesized by high-energy ball milling of the initial materials (Li2CO3, Nb2O5, Ta2O5) and subsequent high-temperature annealing of the resulting powde
Externí odkaz:
https://doaj.org/article/75d68f1bf5a14cfdb5fdd47f8a5a5d35
Publikováno v:
Nanoscale Research Letters, Vol 12, Iss 1, Pp 1-6 (2017)
Abstract Mixed holmium cobaltite-chromite HoCo0.5Cr0.5O3 with orthorhombic perovskite structure (structure type GdFeO3, space group Pbnm) was obtained by solid state reaction of corresponding oxides in air at 1373 K. Room- and high-temperature struct
Externí odkaz:
https://doaj.org/article/531dea57f0d644acabb566aa4512b524
Autor:
Leonid Vasylechko, Andrii Tupys, Vasyl Hreb, Volodymyr Tsiumra, Iryna Lutsiuk, Yaroslav Zhydachevskyy
Publikováno v:
Inorganics, Vol 6, Iss 3, p 94 (2018)
The results are reported on a precise crystal structure and microstructure determination of new mixed YVO4-based orthovanadates of Y0.5R0.5VO4 (R = Sm, Tb, Dy, Ho, Tm, Yb, Lu) as well as some Bi3+-doped RVO4 (R = La, Gd, Y, Lu) nano- (submicro-) mate
Externí odkaz:
https://doaj.org/article/ed40c7f516f043b4a94c199470a537e3
Autor:
Yaroslav Zhydachevskyy, Vitaliy Mykhaylyk, Vasyl Stasiv, Lev-Ivan Bulyk, Vasyl Hreb, Iryna Lutsyuk, Andriy Luchechko, Shusaku Hayama, Leonid Vasylechko, Andrzej Suchocki
Publikováno v:
Inorganic Chemistry. 61:18135-18146
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1bda43737e3503897979aea3e64b12d
https://doi.org/10.1021/acs.inorgchem.2c02807
https://doi.org/10.1021/acs.inorgchem.2c02807