1 documents found
Head: Belous Anatolii. Microwave tunable materials, composites, and devices - 984091. (popup.stage: ).
V.I.Vernadskii Institute of General and Inorganic Chemistry NASU. № 0211U013373
1 documents found
Updated: 2025-12-06
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0211U013373,
0111U009740
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Microwave tunable materials, composites, and devices - 984091
Belous Anatolii,
26-12-2011
V.I.Vernadskii Institute of General and Inorganic Chemistry NASU
Report on the 1st stage of R&D. 29 pp., 13 fig., 1 table., Object of investigation - policrystalline materials based on the solid solutions Ag(Nb1-xTax)O3 (ANT) with the perovskite structure The objective of R&D - development of new tunabe microwave materials, composite structures and microwave components with low dielectric loss and high sensitivity to the applied voltages. In the consequence of the stage 1 of R&D, tunable materials based on the solid solutions Ag(Nb1-xTax)O3 (ANT) with the perovskite structure have been investigated, and the chemical transformations occurring during their synthesis have been examined. The effect of the addition of low-melting dopants Zn2TiO4 and ZnB2O4 on sintering temperature of the ANT ceramics, their phase composition and microstructure have been determined. For the first time, due to the addition of low-melting dopants Zn2TiO4 and ZnB2O4 into the material's composition, a dense single-phase ceramics have been obtained after sintering in air, which demonstrated high level of dielectric properties including high permittivity (400-470) and low dielectric loss (tg d - 10-3). It has been determined that when ANT is doped with 1 wt. % Zn2TiO4 the relative coefficient of tunability nR in a material is as high as 10-15 % under relatively low sterngh of electric field (Е = 3 MV/м). Obtained results denote a promising application of the developed tunable dielectric materials in the voltage tunable components for the modern communication technique. As a result of the project activities, science-technical cooperation between scientists from Ukraine, Slovenia, and UK has been established. OXIDES, FERROELECTRICS, TUNABLE MATERIALS, PEROVSKITES
В'юнов Олег Іванович
Дурилін Дмитро Олександрович
Коваленко Леонід Леонідович
Овчар Олег Вікторович
Пашкова Олена Володимирівна
Плутенко Тетяна Олександрівна
Солопан Сергій Олександрович
Ступін Юрій Дмитрович
Суслов Олександр Миколайович
Хоменко Борис Семенович
2020-04-02
Updated: 2025-12-06
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