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Magnetic microwires with unique combination of magnetic properties suitable for various magnetic sensor applications

Abstract: There is a pressing demand to improve the performance of cost-effective soft magnetic materials for use in high performance sensors and devices. Giant Magneto-impedance effect (GMI), or fast single domain wall (DW) propagation can be observed in properly processed magnetic microwires. In this paper we have identified the routes to obtain microwires with unique combination of magnetic properties allowing observation of fast and single DW propagation and GMI effect in the same microwire. By modifying the annealing conditions, we have found the appropriate regimes allowing achievement of the highest GMI ratio and the fastest DW dynamics. The observed experimental results are discussed considering the radial distribution of magnetic anisotropy and the correlation of GMI effect, and DW dynamics with bulk and surface magnetization processes. Studies of both Fe- and Co-rich microwires, using the magneto-optical Kerr effect, MOKE, provide information on the magnetic structure in the outer shell of microwires. We have demonstrated the existence of the spiral helical structure in both studied microwires. At the same time, torsion mechanical stresses induce helical bistability in the same microwires, which allow us to consider these microwires as materials suitable for sensors based on the large Barkhausen jump.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Corte-Leon P., Zhukova V., Chizhik A., Blanco J.M., Ipatov M., Gonzalez-Legarreta L., Zhukov A.,

 Fuente: Sensors, 2020, 20(24), 7203

Editorial: MDPI

 Fecha de publicación: 16/12/2020

Nº de páginas: 21

Tipo de publicación: Artículo de Revista

 DOI: 10.3390/s20247203

ISSN: 1424-8220

Proyecto español: PGC2018-099530-B-C31

Autores/as

CORTE LEÓN, PAULA

ZHUKOVA ZHUKOVA, VALENTINA

CHIZHIK, ALEXANDER

BLANCO ARANGUREN, JUAN MARÍA

IPATOV, MIHAIL

ZHUKOV EGOROVA, ARKADY PAVLOVICH