Magnetization Dynamics Through Magnetoimpedance Effect in Isotropic Co 2 FeAl/Au/Co 2 FeAl Full-Heusler Alloy Trilayer Films

We investigate the magnetization dynamics in low damping parameter α systems by measuring the magnetoimpedance effect over a wide range of frequencies, from 0.1 to 3.0 GHz, in Co2FeAl/Au/Co2FeAl full-Heusler alloy trilayer films grown by magnetron sputtering on glass and MgO substrates. We show that...

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Bibliographic Details
Published in:Applied physics express 2013-09, Vol.6 (9), p.93001
Main Authors: Corrêa, Marcio Assolin, Escobar, Vivian Montardo, Trigueiro-Neto, Osvaldo, Bohn, Felipe, Sossmeier, Kelly Daiane, Bezerra, Claudionor Gomes, Chesman, Carlos, Pearson, John, Hoffmann, Axel
Format: Article
Language:English
Subjects:
MATERIALS SCIENCE
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Summary:We investigate the magnetization dynamics in low damping parameter α systems by measuring the magnetoimpedance effect over a wide range of frequencies, from 0.1 to 3.0 GHz, in Co2FeAl/Au/Co2FeAl full-Heusler alloy trilayer films grown by magnetron sputtering on glass and MgO substrates. We show that the film produced on the glass substrate presents high magnetoimpedance performance, while that grown on the MgO substrate has low magnetoimpedance performance. Since both films are polycrystalline and have isotropic in-plane magnetic properties, we interpret the magnetoimpedance results in terms of the low damping parameter α and strain effects in the films. Thus, we verified that our films present good magnetoimpedance performance and showed that high performance can be achieved even in films with isotropic in-plane magnetic properties, since they present low damping parameter α.
ISSN:1882-0778
1882-0786
DOI:10.7567/APEX.6.093001