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Saturation magnetostriction of (Fe100-xCox) 73.5Cu1Nb3Si13.5B9 wires

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5 Author(s)
M. Neagu ; Nat. Inst. of R&D for Tech. Phys., Iasi, Romania ; H. Chiriac ; E. Hristoforou ; F. Borza
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A study on the effect of Co addition and annealing temperature performed between 400°C and 600°C for 1 hour on the saturation magnetostriction, λs, of (Fe100-xCox )73.5Cu1Nb3Si13.5B 9 (x=0-25 at.%) wires 130 micrometers in diameter is presented. In the as-cast state the replacement of Fe with Co leads to a progressive decrease of the saturation magnetostriction (20×10-6 for x=0 to 8×10-6 for x=25). After annealing at temperatures up to about 450°C a small increase of the λs value is obtained corresponding to the internal stresses relaxation. In the case of the samples annealed at temperatures above 500°C, a significant decrease of λs was observed. The samples annealed at 550°C present nanocrystalline character and a minimum value of the λs while the samples annealed at 600°C are completely crystallized

Published in:

IEEE Transactions on Magnetics  (Volume:37 ,  Issue: 4 )