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Information × Registration Number 0221U103441, 0120U102313 , R & D reports Title Growth condition investigation of disordered structure single crystals for active medium lasers with ability of ultra short pulse generation popup.stage_title Head Shekhvotsov Oleksii M., Кандидат фізико-математичних наук Registration Date 20-02-2021 Organization Institute of Single Crystals of the National Academy of Sciences of Ukraine popup.description2  Ca3Y2-хYb2х(BO3)4 and Sr3Y1-хYbх(BO3)3 solid solutions for the concentration ranges of х=0-1,6 та х=0-1, respectively, were produced by means of solid state method. It was established, that continuous Ca3Y2-хYb2х(BO3)4 and Sr3Y1-хYbх(BO3)3 solid solutions are formed for the concentration ranges. Unit cell parameters of Ca3Y2-хYb2х(BO3)4 and Sr3Y1-хYbх(BO3)3 solid solutions are changed according to nonlinear low because of re-distribution of cations over crystallographic sites. It was shown, that for Ca3YYb(BO3)4 crystals grown by the Czochralski method in an inert atmosphere the crystal structure decomposition with the formation of CaY1-хYbх(BO3)O phases occurs in the temperature range of 600–900 C. Ca3YYb(BO3)4 single crystals can be grown by spontaneous crystallization of melt. The maximum value of the hardness Hv for the plane (100) was observed for the Ca3YYb(BO3)4 crystal in comparison with Ca3RE2(BO3)4 (RE-Y, Nd, Gd) crystals. The value of hardness Hv is approximately 20% higher than for Ca3RE2(BO3)4 (RE-Y, Nd, Gd) crystals (RE-Y, Nd, Gd). The difference of hardness values for Ca3RE2(BO3)4 (RE-Y, Nd, Gd) and Ca3YYb(BO3)4 crystals is a result of the re-distribution of Ca and REE cations over the M1-M3 crystallographic sites and the different packing densities of the crystallographic plane (100). The possibility of growth transparent Sr3YYb(BO3)3 crystals by the Czochralski method was shown. Product Description popup.authors Bocharov Yevgen V. Bochkov Volodymyr F. Burtseva Kateryna P. Voloshyn Oleksandr V. Vospyanskyi Oleksii K. Gaiduk Andriy I. Yolkin Mykola B. Kozlovskiy Anatoliy A. Lukienko Oleg O. Lubchich Yuriy A. Nadtochaev Vitaliy L. Skorik Stanislav M. Slyunin Yevgen V. Shestakova Ludmyla O. Shekhvotsov Oleksii M. popup.nrat_date 2021-02-20 Close