Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/77505
Type: Artigo de periódico
Title: Anisotropic magnetocaloric effect in gadolinium thin films: Magnetization measurements and acoustic detection
Author: Mansanares, AM
Gandra, FCG
Soffner, ME
Guimaraes, AO
da Silva, EC
Vargas, H
Marin, E
Abstract: In this letter, it is demonstrated the ability of the magnetoacoustic technique in detecting the magnetocaloric effect in gadolinium thin films (1.0 mu m and 3.0 mu m thick), which is not accessible through conventional temperature sensors because of the reduced mass of the samples. The method, which detects the direct effect of the sample temperature variation, proved to be sensitive to the anisotropy of the films, making possible for the investigation of the anisotropic magnetocaloric effect. Magnetization measurements were also carried out, and from these measurements both the adiabatic temperature and the isothermal entropy variations were calculated. The acoustically detected magnetocaloric effect shows very good agreement with these calculations. (C) 2013 AIP Publishing LLC.
Country: EUA
Editor: Amer Inst Physics
Rights: aberto
Identifier DOI: 10.1063/1.4826909
Date Issue: 2013
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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