Title :
Saturation magnetostriction of (Fe100-xCox) 73.5Cu1Nb3Si13.5B9 wires
Author :
Neagu, Maria ; Chiriac, Horia ; Hristoforou, Evangelos ; Borza, Firuta ; Castano, Fernando Jesus
Author_Institution :
Nat. Inst. of R&D for Tech. Phys., Iasi, Romania
fDate :
7/1/2001 12:00:00 AM
Abstract :
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
Keywords :
amorphous magnetic materials; annealing; boron alloys; cobalt alloys; copper alloys; ferromagnetic materials; internal stresses; iron alloys; magnetostriction; nanostructured materials; niobium alloys; silicon alloys; soft magnetic materials; stress relaxation; (Fe100-xCox)73.5Cu1Nb 3Si13.5B9 wire; (FeCo)73.5Cu1Nb3Si13.5 B9; 400 to 600 C; Co addition; amorphous phase; annealing; internal stress relaxation; nanocrystalline phase; saturation magnetostriction; soft ferromagnetic material; Amorphous materials; Annealing; Crystallization; Iron; Magnetic properties; Magnetostriction; Niobium; Remanence; Temperature; Wires;
Journal_Title :
Magnetics, IEEE Transactions on
