Effect of Joule heating on giant magnetoimpedance effect and magnetic properties of Co-rich microwires
Paula Corte-León, V. Zhukova, M. Ipatov, J.M. Blanco, А. Zhukov
Abstract
The effect of Joule-heating on hysteresis loops and giant magnetoimpedance effect, GMI; of Co69.2Fe3.6Ni1B12.5Si11Mo1.5C1.2 glass-coated microwire is studied. Joule heating performed at suitable conditions prevents the magnetic hardening observed during conventional furnace annealing of the studied microwires. A remarkable GMI ratio improvement is observed as compared to as-prepared annealed and even stress-annealed microwires. Observed magnetic softening and GMI ratio improvement have been discussed considering magnetic anisotropy induced by Oersted magnetic field during Joule heating and internal stresses relaxation.
Topics & Concepts
Giant magnetoimpedanceMaterials scienceJoule heatingAnnealing (glass)Condensed matter physicsHysteresisAnisotropySofteningMagnetic anisotropyComposite materialMagnetic fieldNuclear magnetic resonanceMagnetizationGiant magnetoresistanceMagnetoresistanceOpticsQuantum mechanicsPhysicsMetallic Glasses and Amorphous AlloysMagnetic Properties of AlloysMagnetic properties of thin films