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- Title
Thermophysical and Magnetocaloric Properties of the LaFe<sub>11.1</sub>Mn<sub>0.1</sub>Co<sub>0.7</sub>Si<sub>1.1</sub> Alloy.
- Authors
Abdulkadirova, N. Z.; Gamzatov, A. G.; Aliev, A. M.; Gebara, P.
- Abstract
The heat capacity (CP), magnetocaloric effect (∆T and ∆SM), thermal diffusivity η(T), and electrical resistivity ρ(T) of the LaFe11.1Mn0.1Co0.7Si1.1 alloy are studied in the temperature range of 80–300 K in magnetic fields of up to 8 T. Entropy change ∆SM in a magnetic field of 1.8 T is found equal to 4.6 J/(kg K). An anomaly that consists of a sharp decrease in the electrical resistivity in a narrow temperature range and subsequent restoration of its metallic behavior is observed in the curve of temperature dependence ρ(T) near Curie temperature TC. In the vicinity of TC, the following direct relationship between ∆T and resistivity change ∆ρ is found in a magnetic field of 1.8 T: ∆T(T) = α∆ρ(T). The η(T) dependence shows a pronounced minimum near TC, which indicates strong scattering of heat carriers on fluctuations of the magnetic order parameter and, possibly, on the crystal lattice distortions.
- Publication
Physics of Metals & Metallography, 2022, Vol 123, Issue 4, p414
- ISSN
0031-918X
- Publication type
Article
- DOI
10.1134/S0031918X22040020