Abstract
A relation of the thermal expansion with magnetic and magnetotransport properties has been revealed in La0.92Ca0.08MnO3 single crystals in the paramagnetic state. The magnetotransport and lattice properties and the specific features in the neutron scattering characteristics of the La0.92Ca0.08MnO3 single crystals have been explained by the phase separation in the paramagnetic state into magnetic inhomogeneities (clusters) with short-range (∼10 A) and long-range (>102 A) orders. The performed investigations have demonstrated that the clusters are closely related to the crystal lattice and that the magnetic inhomogeneities in the paramagnetic region are correlated to T ∼ 250–300 K ≫ TC.
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