Abstract
The polytypism is found to have a significant influence on the structural transformation of the crystal lattice of the TlGaSe2 ferroelectric with variations in temperature. In the 2C-polytype, unlike the C-polytype, a first-order structural phase transition, which leads to a change in the translational symmetry along the C axis, is not observed in the temperature range T = 90–300 K and a second-order phase transition due to the formation of an incommensurate phase occurs at a higher temperature.
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Original Russian Text © N.A. Borovoĭ, Yu.P. Gololobov, G.L. Isaenko, N.B. Stepanishchev, 2009, published in Fizika Tverdogo Tela, 2009, Vol. 51, No. 11, pp. 2229–2232.
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Borovoĭ, N.A., Gololobov, Y.P., Isaenko, G.L. et al. Influence of polytypism on structural phase transformations in TlGaSe2 crystals. Phys. Solid State 51, 2367–2370 (2009). https://doi.org/10.1134/S1063783409110274
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DOI: https://doi.org/10.1134/S1063783409110274