Abstract
Heat capacity and resistivity of Sm0.55Sr0.45MnO3 ceramics were measured over the temperature range 80–300 K in magnetic fields of up to 26 kOe. These quantities show anomalies caused by the magnetic and structural phase transitions. The critical temperature T c and the heat capacity jump ΔC p (T c ) at T c increase with increasing applied magnetic field H, while the resistivity decreases. The temperature dependences of the measured quantities show hysteresis, which is strongly suppressed in a field of 26 kOe but is sensitive nor to the temperature range neither to the rate of temperature change. The hysteresis of the heat capacity and resistivity of Sm0.55Sr0.45MnO3 is caused by a change in T c with changing lattice parameters upon second-order structural phase transition. The results are discussed in terms of the electron phase separation model.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
É. L. Nagaev, Usp. Fiz. Nauk 166, 833 (1996) [Phys. Usp. 39, 781 (1996)].
Y. Tokura and Y. Tomioka, J. Magn. Magn. Mater. 200, 1 (1999).
N. N. Loshkareva, Yu. P. Sukhorukov, S. V. Naumov, et al., Pis’ma Zh. Éksp. Teor. Fiz. 68, 89 (1998) [JETP Lett. 68, 97 (1998)].
A. I. Abramovich, R. V. Demin, L. I. Koroleva, et al., Pis’ma Zh. Éksp. Teor. Fiz. 69, 375 (1999) [JETP Lett. 69, 404 (1999)].
I. F. Voloshin, A. V. Kalinov, S. E. Savel’ev, et al., Pis’ma Zh. Éksp. Teor. Fiz. 71, 157 (2000) [JETP Lett. 71, 106 (2000)].
C. Martin, A. Maignan, M. Hervieu, and B. Raveau, Phys. Rev. B 60, 12191 (1999).
A. I. Abramovich, L. I. Koroleva, A. V. Michurin, et al., Fiz. Tverd. Tela (St. Petersburg) 42, 1451 (2000) [Phys. Solid State 42, 1494 (2000)].
Y. Tomioka, H. Kuwahara, A. Asamitsu, et al., Appl. Phys. Lett. 70, 3609 (1997).
A. A. Bosak, O. Yu. Gorbenko, A. R. Kaul, et al., J. Magn. Magn. Mater. 211, 61 (2000).
Sh. B. Abdulvagidov, G. M. Shakhshaev, and I. K. Kamilov, Prib. Tekh. Éksp., No. 5, 134 (1996).
L. Ghivelder, I. Abrego Castillo, N. McN. Alford, et al., J. Magn. Magn. Mater. 189, 274 (1998).
M. N. Khlopkin, G. Kh. Panova, A. A. Shikov, et al., Fiz. Tverd. Tela (St. Petersburg) 42, 111 2000) [Phys. Solid State 42, 114 (2000)].
A. Asamitsu, Y. Moritomo, Y. Tomioka, et al., Nature 373, 407 (1995).
L. D. Landau and E. M. Lifshitz, Statistical Physics (Nauka, Moscow, 1976; Pergamon, Oxford, 1980), Part 1.
H. Kuwahara, Y. Moritomo, Y. Tomioka, et al., Phys. Rev. B 56, 9386 (1997).
P. Levy, F. Parisi, G. Polla, et al., cond-mat/0005247 (2000).
Author information
Authors and Affiliations
Additional information
__________
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. 72, No. 9, 2000, pp. 668–672.
Original Russian Text Copyright © 2000 by Aliev, Abdulvagidov, Batdalov, Kamilov, Gorbenko, Amelichev.
Rights and permissions
About this article
Cite this article
Aliev, A.M., Abdulvagidov, S.B., Batdalov, A.B. et al. Heat capacity and resistivity of Sm0.55Sr0.45MnO3 in magnetic fields of up to 26 kOe. Jetp Lett. 72, 464–467 (2000). https://doi.org/10.1134/1.1339901
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1134/1.1339901