Abstract
The phenomenological theory of phase transition in Pr0.6 Ca0.4 MnO3 manganite is developed. It is shown that this is the orbital phase transition and that the two electronic states of the manganese ion, which are discussed in the literature, result from two different types of condensation of the same orbital order parameter. Thus, the manganese ions in Pr1−x Cax MnO3 manganites with 0.3≤x≤0.5 may be in either of the two electronic states, depending on the thermodynamic parameters.
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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. 77, No. 1, 2003, pp. 18–22.
Original Russian Text Copyright © 2003 by Shakhmatov, Plakida, Tonchev.
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Shakhmatov, V.S., Plakida, N.M. & Tonchev, N.S. Orbital phase transition in Pr1−x CaxMnO3 . Jetp Lett. 77, 15–19 (2003). https://doi.org/10.1134/1.1561974
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DOI: https://doi.org/10.1134/1.1561974