Abstract
The temperature dependences of the velocity of longitudinal sound, internal friction, and magnetization of the single crystal with the nominal composition La0.6Pr0.1Ca0.3MnO3 have been measured. It has been found that the substitution of praseodymium for lanthanum in La0.7Ca0.3MnO3 leads to a decrease in the velocity of sound and to an increase in the spontaneous magnetization. The method of determining the Curie temperature distribution function during a first-order transition has been proposed. It has been shown that, in the crystal under study, this function is asymmetric.
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