Enhanced magnetocaloric effect by the rare earth polarization due to the exchange with a transition metal. Study of GdCrO4
Resumen: The zircon polymorph of GdCrO4 has a large magnetocaloric effect over a wide temperature range, with |¿ST| > 20 J/kg·K from 6 K to 34 K, for a magnetic field of 9 T. This unusual behaviour is very interesting on magnetic refrigeration applications, for liquefying H2 or natural gas. The mean-field approach explains that it is due to the weaker Gd-Cr magnetic exchange relative to the Cr-Cr one, while the Gd-Gd exchange is negligible. This possibility has not been sufficiently studied and opens an interesting strategy to design more efficient materials for magnetic refrigeration.
Idioma: Inglés
DOI: 10.4028/www.scientific.net/SSP.257.139
Año: 2017
Publicado en: SOLID STATE PHENOMENA 257 (2017), 139-142 [4 pp.]
ISSN: 1012-0394

Tipo y forma: Article (PostPrint)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
Exportado de SIDERAL (2019-05-23-10:02:15)


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 Notice créée le 2019-05-23, modifiée le 2019-05-23


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