Asymmetric magnetoimpedance effect in ferromagnetic multilayered biphase films

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:393

Article

Silva, E. F.¹  da Silva, R. B.²  Gamino, M.^3,4  de Andrade, A. M. H.³  Vazquez, M.⁵  Correa, M. A.¹  Bohn, F.¹ 

[1] Univ Fed Rio Grande do Norte, Dept Fis Teor & Expt, BR-59078900 Natal, RN, Brazil

[2] Univ Fed Santa Maria, Dept Fis, BR-97105900 Santa Maria, RS, Brazil

[3] Univ Fed Rio Grande do Sul, Inst Fis, BR-91501970 Porto Alegre, RS, Brazil

[4] CSIC, Inst Cienciade Mat Barcelona, Barcelona 08193, Spain

[5] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

关键词: Magnetic systems;    Magnetization dynamics;    Magnetoimpedance effect;    Ferromagnetic films;   

DOI  :  10.1016/j.jmmm.2015.05.079

来源: Elsevier

【 摘 要 】

We investigate the magnetoimpedance effect in ferromagnetic multilayered biphase films. We verify that the films present asymmetric magnetoimpedance behavior and, by playing with the number of the repetitions of the base structure of the multilayer and the probe current frequency, we explore the possibility of tailoring the linear region around zero magnetic field in order to achieve higher sensitivity values. The highest sensitivity is observed for the thicker film, reaching similar to 15 m Omega/Oe at similar to 0.52 GHz. Thus, the results open the possibilities for application of ferromagnetic multilayered biphase films with asymmetric rnagnetoimpedance effect in sensors devices. (C) 2015 Elsevier B.V. All rights reserved

【 授权许可】

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