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Structure, optical, magnetic, and dielectric properties of nanocomposites: opal matrices - titanates of rare-earth elements

Keywords:

M.I. Samoylovich - Dr.Sc. (Phys.-Math.), Professor, Head of Laboratory, Central Research Technological Institute «Technomash» (Moscow). E-mail: samoylovich@cnititm.ru А.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, Chief Researcher, Institute of Radio-Engineering and Electronics named after V.V. Kotelnikova of RAS (Moscow) А.B. Rinkevich - Dr.Sc. (Phys.-Math.), Deputy Director, Metal Physics Institute of Russian Science Academy – Ural Division (Ekaterinburg) S.A. Bagdasarian - Ph.D. (Eng.), General Director, JSC «Scientific Engineering Center «Technological Developments of Telecommunication and Radio Frequency Identification» (Moscow) V. Bovtun - Dr.Sc. (Eng.), Leading Researcher, Institute of Physics ASCR (Praha, Czech Republic)


The conditions for the formation of nanocomposites based on the basis of lattice packings of SiO2 nanospheres (opal matrices) with included clusters of crystalline phase of rare-earth titanates of the general formula of R2Ti2O7 or R2TiO5 (R denotes Er, Dy, Gd, La, Pr, Tb, Yb) in interspherical nanospacing are considered. The composition and structure of the nanocomposites is studied with using X-ray diffraction and Raman spectroscopy. The effect of heat treatment on the structure of the carbon films and the current-voltage characteristics of field emission cathodes on their basis is studied. Results of measuring optical, magnetic and dielectric characteristics of the obtained nanostructures are viewed.
References:

 

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  2. Samojjlovich M.I., Beljanin A.F., Kleshheva S.M. Fazovye prevrashhenija kremnezema v mezhsfericheskikh nanopolostjakh opalovykh matric // Rossijjskijj khimicheskijj zhurnal. 2012. T. LVI. № 3–4. S. 155–162.
  3. Bagdasarian A., Samoylovich M., Mkrtchyan Al., Rinkevich A., Belyanin A., Bagdasarian S., Mkrtchyan Ar., Afanasieva A. Technology of synthesis of opal matrix metamaterials // Advanced Materials Research. 2015. V. 1084. R. 58–60.
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