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Optimization of magnetic properties of magnetic microwires by post-processing

Abstract: The influence of post-processing conditions on the magnetic properties of amorphous and nanocrystalline microwires has been thoroughly analyzed, paying attention to the influence of magnetoelastic, induced and magnetocrystalline anisotropies on the hysteresis loops of Fe-, Ni-, and Co-rich microwires. We showed that magnetic properties of glass-coated microwires can be tuned by the selection of appropriate chemical composition and geometry in as-prepared state or further considerably modified by appropriate post-processing, which consists of either annealing or glass-coated removal. Furthermore, stress-annealing or Joule heating can further effectively modify the magnetic properties of amorphous magnetic microwires owing to induced magnetic anisotropy. Devitrification of microwires can be useful for either magnetic softening or magnetic hardening of the microwires. Depending on the chemical composition of the metallic nucleus and on structural features (grain size, precipitating phases), nanocrystalline microwires can exhibit either soft magnetic properties or semi-hard magnetic properties. We demonstrated that the microwires with coercivities from 1 A/m to 40 kA/m can be prepared.

 Autoría: Zhukova V., Corte-Leon P., González-Legarreta L., Talaat A., Blanco J.M., Ipatov M., Olivera J., Zhukov A.,

 Fuente: Processes, 2020, 8(8), 1006

Editorial: MDPI

 Fecha de publicación: 18/08/2020

Nº de páginas: 28

Tipo de publicación: Artículo de Revista

DOI: 10.3390/PR8081006

ISSN: 2227-9717

Proyecto español: PGC2018-099530-B-C31

Autores/as

ZHUKOVA ZHUKOVA, VALENTINA

CORTE LEÓN, PAULA

BLANCO ARANGUREN, JUAN MARÍA

IPATOV, MIHAIL

OLIVERA, JESÚS

ZHUKOV, ARCADY