Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/242058
Type: Artigo
Title: Acoustic detection of the magnetocaloric effect in gadolinium thin films: influence of the substrate
Author: Nogal, U.
Mansanares, A. M.
Gandra, F. C. G.
Soffner, M. E.
Guimarães, A. O.
Silva, E. C. da
Vargas, H.
Marín, E.
Calderón, A.
Abstract: The magnetocaloric effect (temperature change) in gadolinium thin films is investigated as a function of the external magnetic field using the magnetoacoustic technique. The measured signal evidences the magnetic anisotropy of the sample, and it is in good agreement with results obtained from magnetization measurements. The thermal coupling of the film with the substrate invalidates the adiabatic condition usually achieved when measuring bulk magnetic samples using the magnetoacoustic technique. The influence of the substrate on the temperature of the film is therefore investigated using a simple model for the heat diffusion within the sample. The temperature distribution is calculated as a function of the thermal parameters of the substrate and the results compared to the magnetoacoustic measurements.
The magnetocaloric effect (temperature change) in gadolinium thin films is investigated as a function of the external magnetic field using the magnetoacoustic technique. The measured signal evidences the magnetic anisotropy of the sample, and it is in good agreement with results obtained from magnetization measurements. The thermal coupling of the film with the substrate invalidates the adiabatic condition usually achieved when measuring bulk magnetic samples using the magnetoacoustic technique. The influence of the substrate on the temperature of the film is therefore investigated using a simple model for the heat diffusion within the sample. The temperature distribution is calculated as a function of the thermal parameters of the substrate and the results compared to the magnetoacoustic measurements.
Subject: Acústica
Gadolínio
Magnetização
Efeito magnetocalórico
Filmes finos
Country: Estados Unidos
Editor: Springer
Citation: Acoustic Detection Of The Magnetocaloric Effect In Gadolinium Thin Films: Influence Of The Substrate. Springer/plenum Publishers, v. 36, p. 1099-1105 JUN-2015.
Rights: fechado
Identifier DOI: 10.1007/s10765-014-1820-0
Address: https://link.springer.com/article/10.1007%2Fs10765-014-1820-0
Date Issue: 2015
Appears in Collections:IFGW - Artigos e Outros Documentos

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