Magnetothermal conductivity of ErAl2 for cryogenic applications
The thermal conductivity K of rare-earth intermetallic compounds with magnetic ordering temperatures T0 below 100 K is a key parameter affecting their use in magnetic refrigerators and regenerators. We have measured the thermal conductivity of ErAl2, T0=12 K, between 5 and 170 K in 0- and 7-T applie...
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Veröffentlicht in: | Journal of applied physics 1988-04, Vol.63 (8), p.4294-4296 |
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Hauptverfasser: | , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The thermal conductivity K of rare-earth intermetallic compounds with magnetic ordering temperatures T0 below 100 K is a key parameter affecting their use in magnetic refrigerators and regenerators. We have measured the thermal conductivity of ErAl2, T0=12 K, between 5 and 170 K in 0- and 7-T applied magnetic fields. The zero-field results show a strong, 20-K-wide minimum in the thermal conductivity near the ordering temperature. The results at 7 T indicate that the magnetic field eliminates the minimum and produces a monotonic temperature dependence. We attribute these effects to magnetic scattering of electrons. |
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ISSN: | 0021-8979 1089-7550 |
DOI: | 10.1063/1.340206 |