Giant magnetoimpedance effect at GHz frequencies in amorphous microwires
Source abstract
Abstract
Studies of magnetic properties and GMI effect of amorphous Co-Fe rich microwires reveal that they present GMI effect at GHz frequencies. Magnetic field dependences of GMI effect are affected by the post-processing conditions. In particular, we observed that in Co-Fe rich microwires stress-annealing allows improvement of frequency dependence of GMI ratio at high frequencies. We discussed observed experimental dependences considering both different magnetic structure and the anisotropy in the bulk and near the surface and close analogy between giant magnetoimpedance and ferromagnetic resonance.
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Research context
OpenAlex topics: Metallic Glasses and Amorphous Alloys · Electromagnetic wave absorption materials · Magnetic properties of thin films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Dpto. Fisica de Materiales, Fac. Quimicas, University of Basque Country, UPV/EHU 1 , 20018 San Sebastian, Spain
IKERBASQUE, Basque Foundation for Science 2 , 48011 Bilbao, Spain
Dpto. Fisica Aplicada, EIG, University of Basque Country, UPV/EHU 3 , 20018 San Sebastian, Spain
Dpto. QUIPRE, Inorganic Chemistry-University of Cantabria, Nanomedice-IDIVAL 4 , Avda. de Los Castros 46, 39005 Santander, Spain
Funding
Ministerio de Ciencia, InnovaciÃn y Universidades · Eusko Jaurlaritza · Euskal Herriko Unibertsitatea
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