Abstract
Temperature dependences of the velocity of longitudinal sound V 1 and the internal friction Q −1 are studied for a La0.8Sr0.2MnO3 single crystal in the temperature range 5–350 K. The latter includes the temperature of the structural phase transition T s ≈95 K (from the Pnma orthorhombic low-temperature phase to the \(R\bar 3c\) rhombohedral high-temperature one) and the Curie point T c =308 K. Near the temperatures T s and T c , the curves V 1(T) and Q −1(T) exhibit pronounced singularities. Outside the vicinities of T s and T c , the velocity of sound monotonically decreases with increasing temperature. A thermal hysteresis of giant width is observed in the aforementioned dependences. The hysteresis is attributed to the following mechanism: when the crystal under study is heated starting at temperatures T<T s , some regions occupied by the Pnma low-temperature phase are retained in the \(R\bar 3c\) matrix up to the temperature T=350 K.
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References
É. L. Nagaev, Usp. Fiz. Nauk 166, 833 (1996) [Phys. Usp. 39, 781 (1996)].
A. P. Ramirez, J. Phys.: Condens. Matter 9, 8171 (1997).
Y. Tokura and Y. Tomioka, J. Magn. Magn. Mater. 200, 1 (1999).
J. M. D. Coey, M. Viret, and S. von Molnar, Adv. Phys. 48, 167 (1999).
A. M. Kadomtseva, Yu. F. Popov, G. P. Vorob’ev, et al., Fiz. Tverd. Tela (St. Petersburg) 42, 1077 (2000) [Phys. Solid State 42, 1110 (2000)].
A. Asamitsu, Y. Moritomo, R. Kumai, et al., Phys. Rev. B 54, 1716 (1996).
V. E. Arkhipov, N. G. Bebenin, V. P. Dyakina, et al., Phys. Rev. B 61, 11229 (2000).
A. Moreo, S. Yunoki, and E. Dagotto, Science 283, 2034 (1999).
N. N. Loshkareva, Yu. P. Sukhorukov, É. A. Neifel’d, et al., Zh. Éksp. Teor. Fiz. 117, 440 (2000) [JETP 90, 389 (2000)].
M. Hervieu, G. van Tendeloo, V. Caignaert, et al., Phys. Rev. B 53, 14274 (1996).
D. Shulyatev, S. Karabashev, A. Arsenov, and Ya. Makovskii, J. Cryst. Growth 198/199, 511 (1999).
H. J. McSkimin, in Physical Acoustic. Principles and Methods, Ed. by W. P. Mason (Academic, New York, 1964; Mir, Moscow, 1966), Vol. I, Part A, p. 272.
A. M. Burkhanov, V. V. Gudkov, I. V. Zhevstovskikh, et al., Fiz. Met. Metalloved., No. 1, 68 (1990).
A. Urushibara, Y. Moritomo, T. Arima, et al., Phys. Rev. B 51, 14103 (1995).
R. I. Zainullina, N. G. Bebenin, V. V. Mashkautsan, et al., Zh. Éksp. Teor. Fiz. 120, 139 (2001) [JETP 93, 121 (2001)].
V. E. Arkhipov, N. G. Bebenin, K. M. Demchuk, et al., in Abstract Book of the EASTMAG-2001, Institute of Metal Physics, Ural Division of the Russian Academy of Science, Yekaterinburg, 2001, p. 120.
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Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 74, No. 2, 2001, pp. 120–122.
Original Russian Text Copyright © 2001 by Za\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\)nullina, Bebenin, Burkhanov, Ustinov, Mukovski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\), Arsenov.
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Zainullina, R.I., Bebenin, N.G., Burkhanov, A.M. et al. Giant thermal hysteresis of sound velocity and internal friction in a La0.8Sr0.2MnO3 single crystal. Jetp Lett. 74, 115–117 (2001). https://doi.org/10.1134/1.1405898
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DOI: https://doi.org/10.1134/1.1405898