350 rub
Journal Science Intensive Technologies №1 for 2016 г.
Article in number:
Dielectric properties of nanocomposites: opal matrix - titanate of Li-Zn and Bi
Keywords: nanocomposites opal matrix titanate of lithium-zinc and bismuth X ray diffractometry Raman spectroscopy dielectric properties
Authors:
M.I. Samoylovich - Dr. Sc. (Phys.-Math.), Professor, Head of Department, Central Research Technological Institute «Technomash» (Moscow). E-mail: samoylovich@cnititm.ru A.F. Belyanin - Dr. Sc. (Eng.), Professor, Head of Laboratory, Central Research Technological Institute «Technomash» (Moscow). E-mail: belyanin@cnititm.ru A.S. Bagdasarian - Dr. Sc. (Eng.), Professor, Main Research Scientist, Kotel\'nikov IRE of RAS (Moscow) V. Bovtun - Dr. Sc. (Phys.-Math.), Leading Research Scientist, Institute of Physics ASCR (Praha) S.A. Bagdasarian - Ph. D. (Eng.), General Director JSC «Scientific Engineering Center «Technological Developments of Telecommunication and Radio Frequency Identification» (Moscow)
Abstract:
The conditions for the formation of nanocomposites based on the basis of lattice packings SiO2 nanospheres (opal matrices) with included crystallites of titanate of lithium-zinc and bismuth (Li2ZnTi3O8 and Bi2Ti2O7) in interspherical nanospacing are considered. Obtained nanocomposites volume> 2 cm3 in filling 30-40% of interspherical nanospacing Li2ZnTi3O8 and Bi2Ti2O7 crystallites size of ~50-81 and 28-30 nm, respectively. For the formation of nanocomposites used samples opal matrices with dimensions of single-domain regions >0,1 mm3, diameter SiO2 nanospheres was ~260 nm. The composition and structure of the nanocomposites studied X ray diffraction and Raman spectroscopy. Results of measuring of the frequency dependences of real and imaginary components of the permittivity and microwave conductivity (ranging 10-2?1012 Hz) obtained nanostructures are viewed. Dielectric characteristics have been studied using microwave and terahertz techniques.
Pages: 54-59
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