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Information × Registration Number 0216U010327, 0115U005034 , R & D reports Title Development of new resonance elements with extremely low dielectric loss for supersensitive radio systems popup.stage_title Head Belous Anatolii Grigorievich, Registration Date 05-01-2017 Organization V.I.Vernadskii Institute of General and Inorganic Chemistry NASU popup.description2 Experimental samples of polycrystalline materials based on complex tantalates Ba(M1/3Ta2/3)O3 and niobates Ba(M1/3Nb2/3)O3, where M = Co, Mg, Zn, with the partial deviation from stoichiometry in cationic sublattices have been synthesized, their structure, phase composition, and main microwave characteristics have been studied. The extremely high Q microwave values of material (Qf = 100 000 - 200 000 GHz at a frequency f = 5 -10 GHz) in the investigated materials has been found to originate in the formation of superstructure, in which M2 + ions and Ta5 + (Nb5 +) are 1:2 ordered in the nanoscale domains. The decrease in the Q values has been shown to be primarily due to the formation of additional phases Ba9MgTa14O45 (Ba9MgNb14O45) with the structure of the tetragonal tungsten bronze (TTB). As a result, under a relatively "soft" technological conditions we have produced the experimental samples of resonant elements (TE01delta type dielectric resonators demonstrating the values of the product Qf = 150 000 - 200 000 GHz. The use of developed high-Q elements at centimeter wavelengths greatly improved frequency-selective properties of radio-apparatus by significantly reducing the level of phase noise. Within the reporting period we have published 3 articles in scientific journals, received 6 declaration patents of Ukraine for utility model, and made 2 reports at scientific conferences. Product Description popup.authors Єленіч Олександр Вікторович В'юнов Олег Іванович Дурилін Дмитро Олександрович Кобилянська Софія Дмитрівна Коваленко Леонід Леонідович Ліньова Божена Олександрівна Овчар Олег Вікторович Соловйова Катерина Дмитрівна Солопан Сергій Олександрович Ступін Орій Дмитрович Суслов Олександр Миколайович Хоменко Борис Семенович Шлапа Олія Юрієвна popup.nrat_date 2020-04-02 Close