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PREPARATION AND PHYSICAL PROPERTIES OF OPAL MATRICES WITH NANOPARTICLES OF TITANIUM AND IRON OXIDES

https://doi.org/10.32362/2410-6593-2016-11-6-91-97

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Abstract

The article considers specific features of the formation of nanocomposites based on the lattice packing of SiO2 nanospheres (opal matrices) with clusters of titanium and iron compounds (FeTiO3, FeTi2O5, TiO2, Fe2O3) embedded into nanopores between spheres. For the formation of the nanocomposites samples of opal matrices with the sizes of single-domain regions > 0.1 mm3 were used. The diameter of the SiO2 nanospheres was ~260 nm. Nanocomposites with the volume > 1 cm3 and 10-15% of interspherical nanospacing filled by crystallites of titanium and iron compounds were obtained. The composition and structure of the nanocomposites were studied by electron microscopy, X-ray diffraction and Raman spectroscopy. The dependence of the composition of the synthesized materials on the conditions of their preparation is shown. Results of measurements of the frequency dependences (within the range 1 MHz - 3 GHz) of the magnetic and dielectric characteristics of the obtained nanostructures are presented. Hysteresis loops were studied for the obtained samples.

About the Authors

M. I. Samoylovich
CRTI «Technomash», SEC «Technological Developments of Telecommunication and Radio Frequency Identification»
Russian Federation

Moscow, 121108 Russia

Moscow, 127051Russia

 



А. F. Belyanin
CRTI «Technomash», SEC «Technological Developments of Telecommunication and Radio Frequency Identification», Moscow Technological University (MIREA)
Russian Federation

Moscow, 121108 Russia

Moscow, 127051Russia

Moscow, 119454 Russia



A. S. Bagdasaryan
SEC «Technological Developments of Telecommunication and Radio Frequency Identification», Moscow Technological University (MIREA), Kotel'nikov Institute of Radio-engineering and Electronics (IRE) of RAS
Russian Federation

Moscow, 127051Russia

Moscow, 119454 Russia

Moscow, 125009 Russia



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For citation:


Samoylovich M.I., Belyanin А.F., Bagdasaryan A.S. PREPARATION AND PHYSICAL PROPERTIES OF OPAL MATRICES WITH NANOPARTICLES OF TITANIUM AND IRON OXIDES. Fine Chemical Technologies. 2016;11(6):91-97. https://doi.org/10.32362/2410-6593-2016-11-6-91-97

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ISSN 2410-6593 (Print)
ISSN 2686-7575 (Online)