Near-surface magnetic properties of Co-based amorphous ribbons

Effect of heat treatment on transport and magnetic properties of Co-based amorphous alloys

“…As it has been shown recently [1,2], the air-annealed amorphous ribbons have inhomogeneous near-surface magnetic properties that are ascribed to the inhomogeneous nanocrystalline structure of the near-surface layer. The microstructure of the near-surface layer is very sensitive to the annealing conditions as it clearly seen from magneto-impedance measurements [3].…”

Modeling of asymmetric giant magnetoimpedance in amorphous ribbons with a surface crystalline layer

“…It has been shown that the asymmetry of the GMI profile is related to the hard magnetic crystalline layer, which appears due to the surface crystallization of a ribbon after the field annealing [9,13,14]. Although the effect has been studied experimentally quite well, the satisfactory theoretical explanation is still missing.…”

Surface crystallized Co66Fe4B15Si15Životský1, Postava2, Kraus3 et al. 2005Journal of Magnetism and Magnetic Materials7010View full textAdd to dashboardCite

“…Especially asymmetric GMI is a promising tool for ultra-low field sensors because it exhibits high field sensitivity. GMI asymmetry originates from exchange coupling between the surface crystalline and bulk amorphous phases [2,3]. Although these materials are widely used, change of their magnetic and electric properties during annealing in the air has not been understood well [4,5].…”