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Torsion annealing influence on the impedance behaviour in amorphous FeSiB and CoSiB wires

Author:
Sánchez Fernández, TatianaUniovi authority; Álvarez Alonso, PabloUniovi authority; Pérez Fernández, María JoséUniovi authority; Belzunce Varela, Francisco JavierUniovi authority; Santos Rodríguez, Jesús DanielUniovi authority; Sánchez Llamazares, José LuisUniovi authority; Sánchez Rodríguez, María LuisaUniovi authority; Gorría Korres, PedroUniovi authority; Hernando Grande, BlancaUniovi authority
Subject:

Amorphous Metals

Metallic Glasses

Alloys

Magnetic Properties

Publication date:
2007
Editorial:

Elsevier

Publisher version:
http://dx.doi.org/10.1016/j.jnoncrysol.2006.12.098
Citación:
Journal of Non-Crystalline Solids, 353(8-10), p. 914-918(2007); doi:10.1016/j.jnoncrysol.2006.12.098
Descripción física:
p. 914-918
Abstract:

An experimental study on the influence of a dc magnetic field on the real and imaginary parts of axial diagonal (ζzz) and off-diagonal (ζϕz) components of the surface magnetoimpedance (MI) tensor in amorphous Fe77.5Si7.5B15 and Co72.5Si12.5B15 wires has been performed. The impedance characteristics have been analysed in the as-cast wires and after being torsion annealed. The ac drive current was 5 mArms flowing along the wires in the frequency range from 0.45 to 0.8 MHz. The MI behaviours can be ascribed to the different domain structures of positive and negative magnetostriction wires, before and after the intrinsic anisotropy distribution has been also modified by the annealing treatment.

An experimental study on the influence of a dc magnetic field on the real and imaginary parts of axial diagonal (ζzz) and off-diagonal (ζϕz) components of the surface magnetoimpedance (MI) tensor in amorphous Fe77.5Si7.5B15 and Co72.5Si12.5B15 wires has been performed. The impedance characteristics have been analysed in the as-cast wires and after being torsion annealed. The ac drive current was 5 mArms flowing along the wires in the frequency range from 0.45 to 0.8 MHz. The MI behaviours can be ascribed to the different domain structures of positive and negative magnetostriction wires, before and after the intrinsic anisotropy distribution has been also modified by the annealing treatment.

URI:
http://www.sciencedirect.com/science/article/pii/S0022309307000476
http://hdl.handle.net/10651/11058
ISSN:
0022-3093
DOI:
10.1016/j.jnoncrysol.2006.12.098
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