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Thermal physical properties of the La0.825Sr0.175MnO3 single crystals |
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| Authors: | Batdalov A B Gamzatov A G Aliev A M Khanov L N Mukhuchev A A Kamaludinova Kh E |
| Institution: | 1.Amirkhanov Institute of Physics, Dagestan Scientific Center, Russian Academy of Sciences, ul. M. Yaragskogo 94, Makhachkala, Dagestasn, 367003, Russia ;2.Khasavyurt Branch, Dagestan State University, ul. A. Abukova 36, Khasavyurt, Dagestasn, 368009, Russia ; |
| Abstract: | The heat capacity (C P), the thermal diffusion (η), the thermal conductivity (κ), and the electrical resistance of the La0.825Sr0.175MnO3 single crystal have been measured in the temperature range 80–350 K in magnetic fields to 40 kOe. Dependences C P(T), κ(T), and η(T) have anomalies near T C, which are suppressed in magnetic field. The minima in dependences κ(T) and η(T) near T C are explained by the phonon scattering on fluctuations of the magnetic order parameter. Dependences κ(T) and η(T) have anomalies near T S = 200 K related to the structural transition from the rhombohedral (R) to the orthorhombic (O*) phase. |
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