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Marusenkov, Andriy
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article
Soft magnetic cobalt based amorphous alloys with low saturation induction
Abstract
The influence of the concentration of alloying components on thermal stability, magnetic and electrical properties of amorphous alloys of Co<SUB>73-66</SUB>Fe<SUB>4,6-3</SUB>Cr<SUB>0-9</SUB>(B,Si)<SUB>22-29</SUB> system was studied by methods of differential scanning calorimetry, XRD, resistometry and magnetometry. The crystallization of several alloys with advanced magnetic characteristics was studied. At continuous heating of the ribbons, either primary or eutectic crystallization was observed depending on the chemical composition of these alloys. Certain tendencies in the anomalous behavior of temperature dependence of electrical resistance of ribbons were revealed. By increasing chromium and metalloids concentrations, we obtained the alloys with relatively low saturation induction and large difference between the Curie temperature and the temperature of crystallization onset. The heat treatment regimes to obtain the best magnetic properties of these alloys were found. Prospective applications of Co<SUB>73-66</SUB>Fe<SUB>4,6-3</SUB>Cr<SUB>0-9</SUB>(B,Si)<SUB>22-29</SUB> amorphous ribbons for fabrication of high sensitive sensors of magnetic field were discussed.