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Journal of Materials Science: Materials in Electronics

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06-05-2022 | Comments

Comment on “Structural, dielectric, and magnetic characteristics of Bi(Ni_0.25Ti_0.25Fe_0.50)O₃ ceramics” [J. Mater. Sci.: Mater. Electron. 27, 1209 (2016)]; “Structural and electrical characteristics of (Co, Ti)-modified BiFeO₃” [J. Mater. Sci.: Mater. Electron. 27, 7115 (2016)]; “Structural, electrical, and magnetic characteristics of Ni/Ti-modified BiFeO₃ lead-free multiferroic material” [J. Mater. Sci.: Mater. Electron. 28, 6673 (2017)]

Author: Paweł E. Tomaszewski

Published in: Journal of Materials Science: Materials in Electronics | Issue 16/2022

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Abstract

This comment on the above three papers argues that the crystals should be of sillenite type and the correct formula should be Bi₂₅FeO₃₉:MTi (M = Co or Ni) instead of BiFeO₃. Due to the doping, a new type of unit cell, previously unknown, was proposed for such crystals. There is also about 15% of a secondary phase, BiFeO₃, in the sample. This part of the sample should be responsible for the magnetic properties recorded.

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next article Reply to comment on “Structural, dielectric, and magnetic characteristics of Bi(Ni0.25Ti025Fe0.50)O3 ceramics” [J. Mater. Sci.: Mater. Electron. 27, 1209 (2016)]; “Structural and electrical characteristics of (Co, Ti)-modified BiFeO3” [J. Mater. Sci.: Mater. Electron. 27, 7115 (2016)]; “Structural, electrical, and magnetic characteristics of Ni/Ti-modified BiFeO3 lead-free multiferroic material” [J. Mater. Sci.: Mater. Electron. 28, 6673 (2017)]

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A. Shukla, N. Kumar, C. Behera, R.N.P. Choudhary, Structural, dielectric and magnetic characteristics of Bi(Ni_0.25Ti_0.25Fe_0.50)O₃ ceramics. J. Mater. Sci.: Mater. Electron. 27, 1209 (2016). https://doi.org/10.1007/s10854-015-3877-3CrossRef

A. Shukla, N. Kumar, C. Behera, R.N.P. Choudhary, Structural and electrical characteristics of (Co, Ti) modified BiFeO₃. J. Mater. Sci.: Mater. Electron. 27, 7115 (2016). https://doi.org/10.1007/s10854-016-4674-3CrossRef

N. Kumar, A. Shukla, R.N.P. Choudhary, Structural, electrical and magnetic characteristics of Ni/Ti modified BiFeO₃ lead free multiferroic material. J. Mater. Sci.: Mater. Electron. 28, 6673 (2017). https://doi.org/10.1007/s10854-017-6359-yCrossRef

M. Kireva, V. Tumbalev, V. Kostov-Kytin, P. Tzvetkov, D. Kovacheva, Rietveld study of the changes of phase composition, crystal structure, and morphology of BiFeO₃ by partial substitution of bismuth with rare-earth ions. Minerals 11, 278 (2021). https://doi.org/10.3390/min11030278CrossRef

S.S.F. Morales, J.A.L. Flores, J.L.P. Mazariego, V.M. Fabrega, R.W.G. Gonzalez, Synthesis of Bi₂₅FeO₃₉ by molten salts method and its Mössbauer spectrum. Physica B 504, 109 (2017). https://doi.org/10.1016/j/physb.2016.10.019CrossRef

G.F. Cheng, W. Liu, Z.W. Liu, X.S. Wu, Effect of nitrating on the phase purification in BiFeO₃. J. Magn. Magn. Mater. 382, 179–181 (2015). https://doi.org/10.1016/j.jmmm.2015.01.071CrossRef

V.M. Skorikov, Y.F. Kargin, A.V. Egorysheva, V.V. Volkov, M. Gospodinov, Growth of sillenite-structure single crystals. Inorg. Mater. 41(Suppl. 1), S24–S46 (2005). https://doi.org/10.1007/s10789-005-0317-4CrossRef

M. Valant, D. Suvorov, A stoichiometric model for sillenites. Chem. Mater. 14, 3471–3476 (2002). https://doi.org/10.1021/cm021173lCrossRef

M. Valant, A.-K. Axelsson, N. Alford, Peculiarities of a solid-state synthesis of multiferroic polycrystalline BiFeO₃. Chem. Mater. 19(22), 5431–5436 (2007). https://doi.org/10.1021/cm071730+CrossRef

10.

A.M.L. Lopes, J.P. Araújoa, S. Ferdov, Room temperature synthesis of Bi₂₅FeO₃₉ and hydrothermal kinetic relations between sillenite- and distorted perovskite-type bismuth ferrites. Dalton Trans. 43, 18010–18016 (2014). https://doi.org/10.1039/c4dt01825gCrossRef

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T. Elkhouni, M. Amami, A. Ben Salah, Structural, spectroscopic studies and magnetic properties of doped sillenites-type oxide Bi₁₂[M]O₂₀, M= Fe, Co. J. Supercond. Nov. Magn. 26, 2997–3004 (2013). https://doi.org/10.1007/s10948-013-2271-8CrossRef

12.

P.E. Tomaszewski, Comments on the paper on the multiferroic Bi(Cd_0.5Ti_0.5)O₃-BiFeO₃ solid solution written by N. Kumar et al. and published in J. Alloys Compd. 747, 895 (2018). J. Alloys Compd. 895, 162527 (2022). https://doi.org/10.1016/j.jallcom.2021.162527CrossRef

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P.E. Tomaszewski, Discovery of a new type of sillenite structure. Comments on the papers by Nitin Kumar et al. on the BiFeO₃ crystal co-doped by Co/Ti and Ni/Ti ions and published in Ceramics International 45, 822 (2019) and 47, 22147 (2021). Ceram. Int. 48, 8970 (2022). https://doi.org/10.1016/j.ceramint.2021.12.241CrossRef

14.

P.E. Tomaszewski, Comments on the paper on the double doped BiFeO₃ crystal by Nitin Kumar et al., and published in J. Alloy. Compd. 688, (2016) 858. J. Alloys Compd. 895, 162466 (2022). https://doi.org/10.1016/j.jallcom.2021.162466CrossRef

Title: Comment on “Structural, dielectric, and magnetic characteristics of Bi(Ni0.25Ti0.25Fe0.50)O3 ceramics” [J. Mater. Sci.: Mater. Electron. 27, 1209 (2016)]; “Structural and electrical characteristics of (Co, Ti)-modified BiFeO3” [J. Mater. Sci.: Mater. Electron. 27, 7115 (2016)]; “Structural, electrical, and magnetic characteristics of Ni/Ti-modified BiFeO3 lead-free multiferroic material” [J. Mater. Sci.: Mater. Electron. 28, 6673 (2017)]
Author: Paweł E. Tomaszewski
Publication date: 06-05-2022
Publisher: Springer US
Published in: Journal of Materials Science: Materials in Electronics / Issue 16/2022
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI: https://doi.org/10.1007/s10854-022-08329-z

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