Magnetocaloric effect of thin Dy films
We report a theoretical study of the magnetocaloric effect (MCE) of Dy thin films, and show that the confinement of spins in the direction perpendicular to the surfaces leads to a considerable enhancement of the MCE. The adiabatic temperature change, 1T , for external field strength change, 1H, of t...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2006 |
| País: | Brasil |
| Institución: | Universidade Federal do Rio Grande do Norte (UFRN) |
| Repositorio: | Repositório Institucional da UFRN |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.ufrn.br:123456789/28926 |
| Acceso en línea: | https://repositorio.ufrn.br/jspui/handle/123456789/28926 https://doi.org/10.1016/j.ssc.2006.09.013 |
| Access Level: | acceso abierto |
| Palabra clave: | A. Helimagnets; D. Phase transitions of magnetic films; E. Giant magnetocaloric effect |
| Sumario: | We report a theoretical study of the magnetocaloric effect (MCE) of Dy thin films, and show that the confinement of spins in the direction perpendicular to the surfaces leads to a considerable enhancement of the MCE. The adiabatic temperature change, 1T , for external field strength change, 1H, of the order of a few kOe, is much larger than what is found in bulk Dy, reaching 1T 1H = 6 K/T for ultra-thin films. |
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