Measurements of the magnetic and magnetothermal properties of heavy rare earths
| Autor: | Dmitry Kopeliovich, Y.I. Spichkin, R.R. Gimaev, A.M. Tishin |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Condensed matter physics Physics::Instrumentation and Detectors 020209 energy Rare earth 02 engineering and technology Calorimetry 021001 nanoscience & nanotechnology Condensed Matter Physics Heat capacity Electronic Optical and Magnetic Materials Magnetic field Magnetization Thermal conductivity 0202 electrical engineering electronic engineering information engineering 0210 nano-technology Adiabatic process |
| Zdroj: | Journal of Magnetism and Magnetic Materials. 459:215-220 |
| ISSN: | 0304-8853 |
| DOI: | 10.1016/j.jmmm.2017.11.018 |
| Popis: | The adiabatic temperature change, magnetization, heat capacity and thermal conductivity coefficient of a set of commercial purity heavy rare earth metals were measured. The temperature and magnetic field dependences of the adiabatic temperature change and magnetization were measured by direct and induction methods, respectively, in dynamic mode closely corresponding to the operational conditions of working magnetic refrigerators. The temperature dependences of the heat capacity and thermal conductivity coefficient in a constant magnetic field were measured by adiabatic calorimetry and steady-state methods. The obtained experimental results were compared with the literature data on high-purity heavy rare earths magnetothermal properties. The possible effect of the material purity on magnetic refrigerators parameters and ability to use the commercial purity materials in such devices are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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