Affiliations: [a] "Al. I. Cuza" University, Faculty of Physics, 11
Carol Blvd., 6600 Iaşi, Romania | [b] National Institute of R&D for Technical Physics, 47
Mangeron Blvd., 6600 Iaşi, Romania
Correspondence:
[*]
Corresponding author: Dr. Florin Mihai Tufescu, "Al. I. Cuza"
University, Faculty of Physics, 11 Carol Boulevard, 6600 Iaşi, Romania.
Tel.: +40 32 201177; Fax: +40 32 210775; E-mail: [email protected]
Abstract: Results on the FMR investigation of the effect of applied tensile
stresses on the surface magnetic anisotropy of
Co6_{8.25}Fe_{4.5}Si_{12.25}B_{15}amorphous
glass-covered wires are reported. Axially applied stresses lead to a decrease
of the resonance field and absorption intensity that correspond to the main
resonance peak, indicating a reinforcement of the circumferential
magnetoelastic anisotropy from the wire's surface region. The FMR spectra
determined at 8.5 GHz -- the lowest employed frequency of the microwave
field -- display a compound aspect, i.e. a secondary resonance peak is observed
at slightly larger values of the dc magnetic field. This fact indicates that
one can detect a region with different anisotropy direction towards the wire's
inner zone when the magnetic penetration depth is large enough. The obtained
results are valuable as regards the sensor applications of such materials.
