Abstract
Nuclear gamma resonance (NGR) is used to study powders of externally homogeneous magnetite-like substances that form in the reaction between 1,1'-diacetylferrocene and ε-caprolactam or 2-aminoethanesulfonic acid in a relatively low range of temperatures (100–180°C). The powders are shown to consist of magnetite and a ferrocene-containing matrix that contains 1,1'-diacetyleferrocene and an organic nitrogen-containing component. In studying the temperature dependence of the NGR spectra in the range of 295–80 K, it is established that a fast effective exchange of electrons occurs in the samples both internally and between two Fe2+/Fe3+ subsystems, ferrocene/ferricenium and sublattice B of magnetite. As a result, classical mechanisms of electron exchange retardation and the phase ordering of the magnetite structure do not work, and no Verwey transition is observed in the samples.
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This work was financially supported by the Russian Science Foundation, project no. 17-73-30036.
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Translated by K. Utegenov
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Babin, V.N., Belousov, Y.A., Borisov, Y.A. et al. Ferrimagnetic Nature of Composite Products Based on 1,1'-Diacetylferrocene, ε-Caprolactam, and Taurine. Russ. J. Phys. Chem. 94, 1989–1995 (2020). https://doi.org/10.1134/S0036024420100040
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DOI: https://doi.org/10.1134/S0036024420100040