Abstract
The transition between the heavy and localized polaron modes in the Fe x TiSe2 compounds used as an example is studied by methods of thermal analysis, neutron diffraction, and dc conductivity. It is found that the transition under investigation is accompanied by an anomaly in the behavior of the crystallographic parameters. The changes observed in the character and magnitude of the electrical conductivity at a higher temperature, as well as the thermal effect, are attributed to thermal broadening of the polaron band. The difference between the data for Fe x TiSe2 and the previously obtained results for Ag x TiTe2 correlates with the difference in the binding energies of the polaron bands in these materials.
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Original Russian Text © E.G. Galieva, N.A. Danilova, S.V. Pryanichnikov, S.G. Titova, A.N. Titov, I.A. Bobrikov, A.M. Balagurov, 2008, published in Fizika Tverdogo Tela, 2008, Vol. 50, No. 2, pp. 303–306.
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Galieva, E.G., Danilova, N.A., Pryanichnikov, S.V. et al. Anomalies in the structure and properties of titanium diselenide intercalated by iron. Phys. Solid State 50, 314–317 (2008). https://doi.org/10.1134/S1063783408020169
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DOI: https://doi.org/10.1134/S1063783408020169