Журнал нано- та електронної фізики (Journal of nano- and electronic physics)

Search Results

Now showing 1 - 2 of 2

Magnetic Microstructure Aluminum-substituted Barium Hexaferrite for Microwave Devices mm-Wavelength Range
(Sumy State University, 2015) Shipko, M.N.; Korovushkin, V.V.; Kostishyn, V.G.; Ursulyak, N.D.; Nalogin, A.G.; Savtchenko, E.S.
The magnetic structure and cationic distribution was investigate in ferrite with a hexagonal structure BaFe12 – хAlхO12 (х ≤ 2). It is found that when х = 2 Al3+ ions are localized mainly in the positions of 12k (а-sublattice) and 4f1 (с-sublattice). This contribute to change of number magnetically active connections and therefore the magnetic structure of ferrite and magnetic parameters. It was concluded about the possibility of using the results obtained with the choice of optimal composition of substrates for millimeter-wave devices.
The Physical Model of Formation of Hexagonal Ferrites BaFe12O19
(Sumy State University, 2015) Shipko, M.N.; Kostishyn, V.G.; Chitanov, D.N.
To identify the features of structural transformations occurring during the formation of the crystal lattice of hexagonal barium ferrite were studied the following issues: a) component defined that are structural element in the reaction of solid-phase synthesis of ferrites BaFe12O19; b) the phase composition set of the reaction products formed in mixtures of BaCО3 – Fe2O3; c) a crystal-chemical model developed allows visually describe the transformation of -Fe2O3 – BaFe12O19.