| Autor: |
Kamantsev Alexander, Koledov Victor, Dilmieva Elvina, Mashirov Alexey, Shavrov Vladimir, Cwik Jacek, Tereshina Irina, Khovaylo Vladimir, Lyange Maria, Gonzalez-Legarreta Lorena, Hernando Blanca, Ari-Gur Pnina |
| Jazyk: |
angličtina |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
EPJ Web of Conferences, Vol 75, p 04008 (2014) |
| Druh dokumentu: |
article |
| ISSN: |
2100-014X |
| DOI: |
10.1051/epjconf/20147504008 |
| Popis: |
High cooling power of magnetocaloric refrigeration can be achieved only at large amounts of heat, which can be transferred in one cycle from cold end hot end at quasi-isothermal conditions. The simple and robust experimental method of direct measuring of the transferred heat of materials with magnetocaloric effect (MCE) in thermal contact with massive copper block with definite heat capacity in quasi-isothermal regime was proposed. The vacuum calorimeter for the specific transferred heat ΔQ and adiabatic temperature change ΔT measurements of MCE materials in the fields of Bitter coil magnet up to H = 140 kOe was designed and tested on samples of Ni43Mn37.9In12.1Co7 Heusler alloy with inverse MCE in the vicinity of meta-magnetostructural phase transition (PT). It was found, that the magnetic field H = 80 kOe produces complete PT from martensite to austenite with ΔQ = - 1600 J/kg at initial temperature 273 K. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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