On the nature of the magnetocaloric effect in the Ni46Mn41In13 Heusler alloy in cyclic magnetic fields
| Autor: | Alexey Mashirov, L. N. Khanov, V. V. Koledov, A. B. Batdalov, A. M. Aliev |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Condensed matter physics Alloy General Physics and Astronomy 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Thermal expansion Magnetic field Amplitude 0103 physical sciences engineering Magnetic refrigeration Total entropy 0210 nano-technology |
| Zdroj: | Journal of Applied Physics. 129:123901 |
| ISSN: | 1089-7550 0021-8979 |
| Popis: | In cyclic magnetic fields with an amplitude of up to 8 T, the magnetocaloric effect (MCE) and thermal expansion in the Ni46Mn41In13 Heusler alloy are investigated. The magnetic and structural contributions to the total entropy change are estimated, and it was found that the magnetic contribution is dominant and the contributions have different signs (ΔSm = 12.19 J/kg K, ΔSstr = −1.05 J/kg K). In weak magnetic fields, the values of the MCE in heating and cooling runs differ greatly, which is associated with an unequal response of the structurally and magnetically inhomogeneous system to the influence of a magnetic field. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|