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Structure, dielectric and magnetic properties of opal matrices with nanoparticles FeTiO3

Keywords:

M.I. Samoylovich - Dr.Sc. (Phys.-Math.), Professor, Head of Department, Central Research Technological Institute «Technomash» (Moscow)
А.F. Belyanin - Dr.Sc. (Eng.), Professor, Head of Department, Central Research Technological Institute «Techno-mash» (Moscow)
E.V. Shevchenko - Deputy Director of the Resource Center Saint Petersburg State University
E.V. Charnaya - Dr.Sc. (Phys.-Math.), Professor, Resource Center Saint Petersburg State University
A.S. Bagdasarian - Dr.Sc.(Eng.), Professor, Academician of NAS RA, Chief Research Scientist, Institute of Radio-engineering and Electronics of RAS; Joint Stock Company «Scientific Engineering Center «Technological Developments of Telecommunication and Radio Frequency Identification» (Moscow)
V.V. Odinokov - Dr.Sc.(Eng.), Professor, Deputy Director, Research Institute of Precision Machine Manufacturing (Moscow)


The article considers specific features of the formation of nanocomposites based on the lattice packing of SiO2 nanospheres (opal ma-trices) 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. Dc susceptibility and hysteresis loops were studied for the obtained samples within a temperature range 1,8…400 K. The coexistence of two ferromagnetic contributions with distinct temperatures of phase transitions was shown.

References:
  1. Tang X., Hu K. The formation of ilmenite FeTiO3 powders by a novel liquid mix and H2/H2O reduction process // Journal of materials science. 2006. V. 41. Issue 23. P. 8025–8028.
  2. Wilson N.C., Muscat J., Mkhonto D., Ngoepe P.E., Harrison N.M. Structure and properties of ilmenite from first principles // Physical Review B 71. 2005. Р. 075202-1–075202-9.
  3. Varga T., Kumar A., Vlahos E., Denev S., Park M., Hong S., Sanehira T., Wang Y., Fennie C.J., Streiffer S.K., Ke X., Schiffer P., Gopalan V., Mitchell J.F. Coexistence of weak ferromagnetism and ferroelectricity in the high pressure LiNbO3-type phase of FeTiO3 // Physical review letters. 2009. V. 103. Р. 047601.
  4. Samojlovich M.I., Beljanin A.F., Bagdasarjan A.S., Bovtun V. Stroenie i dijelektricheskie svojstva nanokompozitov: opalovye matricy – oksidy titana i titanaty redkozemel'nyh jelementov // Tonkie himicheskie tehnologii. 2016. T. XI. № 2. S. 66–73.
  5. Samojlovich M.I., Beljanin A.F., Bagdasarjan A.S., Bovtun V., Bagdasarjan S.A. Dijelektricheskie svojstva nanokompozitov: opalovye matricy – titanaty Li-Zn i Bi // Naukoemkie tehnologii. 2016. T. 17. № 1. S. 54–59.
  6. Samojlovich M.I., Beljanin A.F., Odinokov V.V., Bovtun V., Kempa M., Nuzhnyj D., Savinov M. Poluchenie i fizicheskie svojstva nanokompozitov: opalovyh matric – oksidov titana // Nanoindustrija. 2016. № 4(66). S. 78–93.
  7. Samojlovich M.I., Beljanin A.F., Bagdasarjan A.S., Rinkevich A.B., Bagdasarjan S.A., Bovtun V. Stroenie, opticheskie, magnitnye i dijelektricheskie svojstva nanokompozitov: opalovye matricy – titanaty redkozemel'nyh jelementov // Naukoemkie tehnologii. 2015. T. 16. № 10. S. 63–71.
  8. Samojlovich M.I., Beljanin A.F., Bagdasarjan A.S., Bagdasarjan S.A. Poluchenie i strukturnaja ustojchivost' uporjadochennyh nanokompozitov: opalovye matricy – titanaty svinca i manganit terbija // Naukoemkie tehnologii. 2016. T. 17. № 9. S. 49–55.
  9. Samojlovich M.I., Beljanin A.F., Bagdasarjan A.S., Rinkevich A.B., Bagdasarjan S.A., Bovtun V. Stroenie, opticheskie, magnitnye i dijelektricheskie svojstva nanokompozitov: opalovye matricy – titanaty redkozemel'nyh jelementov // Nanomaterialy i nanostruktury – XXI vek. 2016. T. 7. № 2. S. 46–54.
  10. Belov N.V. Struktura ionnyh kristallov i metallicheskih faz. M. Izd. AN SSSR, 1947. 237 s.
  11. Samojlovich M.I., Beljanin A.F., Bagdasarjan A.S. Poluchenie i fizicheskie svojstva opalovyh matric s nanochasticami oksidov Fe i Ti // Tonkie himicheskie tehnologii. 2016. T. 11. № 6. S. 91–97.
  12. Samojlovich M.I., Beljanin A.F., Bagdasarjan A.S., Bagdasarjan S.A. Vlijanie sostava na dijelektricheskie i magnitnye svojstva reshetchatyh upakovok nanosharov SiO2 s nanochasticami oksidov Fe i Ti // Trudy NIIR. 2016. № 4. S. 8–14.
  13. Hardcastle F.D. Raman spectroscopy of titania (TiO2) nanotubular water-splitting catalysts // Journal of the Arkansas academy of science. 2011. V. 65. P. 43–48.
  14. Raghavender A.T., Hong N.H., Lee K.J., Jung M.-H., Skoko Z., Vasilevskiy M., Cerqueira M.F., Samantilleke A.P. Nano-ilmenite FeTiO3: Synthesis and characterization // Journal of magnetism and magnetic materials. 2013. V. 331. P. 129–132.
  15. Shevchenko E.V., Charnaja E.V., Samojlovich M.I., Bugaev A.S. Magnitnye svojstva opalovyh matric s nanochasticami soedinenij titana i zheleza // Nanoinzhenerija. Sbornik nauchnyh trudov VIII Mezhdunarodnoj nauchno-tehnicheskoj konferencii. M.: MGTU im. N.Je. Baumana. 2016. S. 362–364.
  16. Song P., Li G.K., Ma L., Zhen C.M., Hou D.L., Wang W.H., Liu E.K., Chen J.L., Wu G.H. Magnetization jumps and exchange bias induced by a partially disordered antiferromagnetic state in (FeTiO3)0,9–(Fe2O3)0,1 // Journal of applied physics. 2014. V. 115. P. 213907.
May 29, 2020

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