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This article is cited in 10 scientific papers (total in 10 papers)
Magnetism
Study of features of the composition, magnetic, and crystal structure of barium hexaferrite BaFe$_{12-x}$Ti$_{x}$O$_{19}$
V. V. Korovushkina, A. V. Trukhanova, V. G. Kostishina, I. M. Isaeva, I. V. Shchetinina, N. M. Durova, A. Yu. Mironovicha, I. O. Minkovaa, K. A. Astapovichb a National University of Science and Technology «MISIS», Moscow
b Scientific-Practical Materials Research Centre of NAS of Belarus
Abstract:
The features of the composition, crystal, and magnetic structure of Ti-substituted barium hexaferrite BaFe$_{12-x}$Ti$_{x}$O$_{19}$ (0.25 $\le x\le$ 1.5) are studied by Mössbauer spectroscopy, vibration magnetometry, X-ray diffraction, and simultaneous thermal analysis. Bounded heterovalent isomorphism implemented by the scheme 2Fe$^{3+}\to$Ti$^{4+}$+Fe$^{2+}$ while retaining the charge balance is established when Fe$^{3+}$ ions are partially substituted with Ti$^{4+}$ ions. An increase in the 3$d$-electron density and the presence of Fe$^{2+}$ in BaFe$_{12-x}$Ti$_{x}$O$_{19}$ samples with $x$ = 1.5 is detected by Mössbauer spectroscopy. The heterovalent isomorphic substitution limit is determined to be within 0.75 $<x<$ 1.0. Using Mössbauer spectroscopy and X-ray diffraction, the formation of titanium-contained phases at $x$ = 1.0 whose content increases with the degree of substitution is shown. The data on the preferential distribution of substituent ions (Ti$^{4+}$) in the barium hexaferrite structure at the 12$k$ and 2$b$ sites are presented.
Keywords:
hexaferrites, heterovalent substitution, titanium, Mössbauer spectroscopy, magnetic properties, X-ray diffraction, synchronous thermal analysis.
Received: 31.10.2019 Revised: 17.12.2019 Accepted: 24.12.2019
Citation:
V. V. Korovushkin, A. V. Trukhanov, V. G. Kostishin, I. M. Isaev, I. V. Shchetinin, N. M. Durov, A. Yu. Mironovich, I. O. Minkova, K. A. Astapovich, “Study of features of the composition, magnetic, and crystal structure of barium hexaferrite BaFe$_{12-x}$Ti$_{x}$O$_{19}$”, Fizika Tverdogo Tela, 62:5 (2020), 789–798; Phys. Solid State, 62:5 (2020), 891–901
Linking options:
https://www.mathnet.ru/eng/ftt8438 https://www.mathnet.ru/eng/ftt/v62/i5/p789
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