Abstract
The temperature dependences of the velocity of longitudinal sound waves and the internal friction in a La0.82Ca0.18MnO3 single crystal with the Curie temperature T C = 181 K have been studied. As temperature decreases, the single crystal is shown to undergo the transition from the pseudocubic O* to the Jahn–Teller O’ phase at T ~ 254 K and the reverse transition from O’ to O* phase at T ~ 84 K. The velocity of sound and the internal friction in the O’ phase are found to be significantly smaller than those in the O* phase.
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Original Russian Text © R.I. Zainullina, N.G. Bebenin, V.V. Ustinov, D.A. Shulyatev, 2017, published in Fizika Tverdogo Tela, 2017, Vol. 59, No. 2, pp. 275–278.
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Zainullina, R.I., Bebenin, N.G., Ustinov, V.V. et al. Elastic properties of La0.82Ca0.18MnO3 single crystal. Phys. Solid State 59, 283–286 (2017). https://doi.org/10.1134/S1063783417020330
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DOI: https://doi.org/10.1134/S1063783417020330