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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2020, Volume 112, Issue 6, Pages 374–378
DOI: https://doi.org/10.31857/S1234567820180068 (Mi jetpl6258) 		 
This article is cited in 8 scientific papers (total in 8 papers)

CONDENSED MATTER

Formation of new crystalline phases upon high-temperature annealing of iron borate FeBo$_3$ in different gas media

N. I. Snegireva, I. S. Lyubutina, S. V. Yagupovb, A. G. Kulikova, V. V. Artemova, Yu. A. Mogilenecb, M. B. Strugatskyb

a Shubnikov Institute of Crystallography, Federal Scientific Research Centre Crystallography and Photonics, Russian Academy of Sciences, Moscow, 119333 Russia
b Physics and Technology Institute, Vernadsky Crimean Federal University, Simferopol, 295007 Russia
Full-text PDF (722 kB) Citations (8)
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DOI: https://doi.org/10.31857/S1234567820180068
Abstract: Iron borate FeBO$_3$ crystals are annealed in neutral, oxidizing, and reducing gas media on a specially designed setup. The effect of the chemical medium and annealing modes on the surface morphology and phase composition of the samples is established. It is shown that annealing in a neutral or oxidizing medium leads to the recrystallization of FeBO$_3$ into the hematite $\alpha$-Fe$_2$O$_3$ phase, whereas annealing in a reducing medium results in the formation of the pyroborate Fe$_2$B$_2$O$_5$ phase and the metal $\alpha$-Fe iron phase. The difference in the nature of structural transformations is associated with the change in the valence state of iron ions upon annealing in the reducing atmosphere. This result is of interest as a method for the transformation of crystalline phases.
Funding agency Grant number
Ministry of Education and Science of the Russian Federation RFMEFI62119X0035
This work was supported by the Russian Foundation for Basic Research (project no. 19-29-12016-mk, development of the experimental setup and the production of crystalline samples). The X-ray phase analysis and scanning electron microscopy measurements were performed using the equipment of the Shared Research Center and were supported by the Ministry of Science and Higher Education of the Russian Federation (project no. RFMEFI62119X0035, state assignment for the Federal Research Center Crystallography and Photonics).
Received: 11.08.2020
Revised: 14.08.2020
Accepted: 14.08.2020
English version:
Journal of Experimental and Theoretical Physics Letters, 2020, Volume 112, Issue 6, Pages 352–356
DOI: https://doi.org/10.1134/S0021364020180113
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: N. I. Snegirev, I. S. Lyubutin, S. V. Yagupov, A. G. Kulikov, V. V. Artemov, Yu. A. Mogilenec, M. B. Strugatsky, “Formation of new crystalline phases upon high-temperature annealing of iron borate FeBo$_3$ in different gas media”, Pis'ma v Zh. Èksper. Teoret. Fiz., 112:6 (2020), 374–378; JETP Letters, 112:6 (2020), 352–356
Citation in format AMSBIB
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    • This publication is cited in the following 8 articles:
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