E. Shuvaeva

Studies of the Defects Influence on Magnetic Properties of Glass-Coated Microwires

Using local nucleation field technique, electronic microscopy, and optical microscopy, we studied different kind of defects in glass-coated microwires. We observed variation of Fe and Si content along the microwires and oxygen presence in defective regions on the metallic nucleus surface and indications of chemical interaction between the glass-coating and metallic nucleus.

Magnetic Properties and Giant Magnetoimpedance Effect in Nanocrystalline Microwires

We studied GMI effect and magnetic properties of Finemet-type FeCuNbSiB microwires. We observed that GMI magnetic field and frequency dependences and magnetic softness of composite microwires produced by the Taylor-Ulitovski technique can be tailored either controlling magnetoelastic anisotropy of as-prepared FeCuNbSiB microwires or controlling their structure by heat treatment or changing the fabrication conditions. High GMI effect has been observed in heat treated microwires with nanocrystalline structure.