Acoustic Detection of the Magnetocaloric Effect in Gadolinium Thin Films: Influence of the Substrate

U. Nogal; A. M. Mansanares; F. C.G. Gandra; M. E. Soffner; A. O. Guimarães; E. C. da Silva; H. Vargas; E. Marín; A. Calderón

doi:10.1007/s10765-014-1820-0

Acoustic Detection of the Magnetocaloric Effect in Gadolinium Thin Films: Influence of the Substrate

U. Nogal, A. M. Mansanares, F. C.G. Gandra, M. E. Soffner, A. O. Guimarães, E. C. da Silva, H. Vargas, E. Marín, A. Calderón

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Resumen

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.

Idioma original	Inglés
Páginas (desde-hasta)	1099-1105
Número de páginas	7
Publicación	International Journal of Thermophysics
Volumen	36
N.º	5-6
DOI	https://doi.org/10.1007/s10765-014-1820-0
Estado	Publicada - 22 jun. 2015
Publicado de forma externa	Sí

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@article{e3461627c14a4abe8e4acec673db9cb0,

title = "Acoustic Detection of the Magnetocaloric Effect in Gadolinium Thin Films: Influence of the Substrate",

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.",

keywords = "Acoustic detection, Gadolinium, Magnetization, Magnetocaloric effect, Thin films",

author = "U. Nogal and Mansanares, {A. M.} and Gandra, {F. C.G.} and Soffner, {M. E.} and Guimar{\~a}es, {A. O.} and {da Silva}, {E. C.} and H. Vargas and E. Mar{\'i}n and A. Calder{\'o}n",

note = "Publisher Copyright: {\textcopyright} 2015, Springer Science+Business Media New York.",

year = "2015",

month = jun,

day = "22",

doi = "10.1007/s10765-014-1820-0",

language = "Ingl{\'e}s",

volume = "36",

pages = "1099--1105",

journal = "International Journal of Thermophysics",

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TY - JOUR

T1 - Acoustic Detection of the Magnetocaloric Effect in Gadolinium Thin Films

T2 - Influence of the Substrate

AU - Nogal, U.

AU - Mansanares, A. M.

AU - Gandra, F. C.G.

AU - Soffner, M. E.

AU - Guimarães, A. O.

AU - da Silva, E. C.

AU - Vargas, H.

AU - Marín, E.

AU - Calderón, A.

PY - 2015/6/22

Y1 - 2015/6/22

N2 - 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.

AB - 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.

KW - Acoustic detection

KW - Gadolinium

KW - Magnetization

KW - Magnetocaloric effect

KW - Thin films

UR - http://www.scopus.com/inward/record.url?scp=84935010468&partnerID=8YFLogxK

U2 - 10.1007/s10765-014-1820-0

DO - 10.1007/s10765-014-1820-0

M3 - Artículo

SN - 0195-928X

VL - 36

SP - 1099

EP - 1105

JO - International Journal of Thermophysics

JF - International Journal of Thermophysics

IS - 5-6

ER -

Acoustic Detection of the Magnetocaloric Effect in Gadolinium Thin Films: Influence of the Substrate

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