Affiliations: [a] National Institute of R & D for Technical
Physics, 47 Mangeron Blvd., 6600 Iasi 3, Romania
Correspondence:
[*]
Corresponding author: Dr. Maria Neagu, National Institute of
Research and Development for Technical Physics, 47 Mangeron Blvd., 6600 Iasi 3,
Romania. Tel.: +40 32 130680; Fax: +40 32 231132; E-mail: mneagu@phys-iasi.ro
Abstract: Results concerning the influence of Mo addition and thermal
treatment on the Hall effect and magnetoresistance of
Co_{68.25-x}Fe_{4.5}Si_{12.25}B_{15}Mo_x
(x=1; 2) ribbons in the amorphous, nanocrystallized and
crystallized states are reported. The value of the Hall resistivity of the
samples increases continuously with applied magnetic field up to about 7 kOe
and 13 kOe for
Co_{67.25}Fe_{4.5}Si_{12.25}B_{15}Mo_1and
Co_{66.25}Fe_{4.5}Si_{12.25}B_{15}Mo_2
alloys, respectively and then it approaches saturation. For
Co_{67.25}Fe_{4.5}Si_{12.25}B_{15}Mo_1ribbons
the ferromagnetic anisotropic resistivity (FAR) values are 2.78 ×
10^{-4}, 2.60 × 106^{-4}and 2.84 ×
10^{-4} for amorphous, nanocrystalline and crystalline states,
respectively. The FAR values of
Co_{66.25}Fe_{4.5}Si_{12.25}B_{15}Mo_2
ribbons are 1.35 × 10^{-4}, 1.78 × 10^{-4} and
18 × 10^{-4}for amorphous, nanocrystalline and
crystalline states, respectively.
