Cobalt rich manganese containing near-zero magnetostrictive...

Details Cobalt rich manganese containing near-zero magnetostrictive... Cobalt rich manganese containing near-zero magnetostrictive...

C - Chemistry, Metallurgy

22

C

75/1.1

C22C 19/07 (2006.01) C22C 45/04 (2006.01)

Patent

CA 1222648

ABSTRACT A cobalt based, manganese-containing glassy metal alloy is provided. The alloy has a combination of near-zero magnetostriction (+5ppm to -lppm), high permeability (greater than 5,000) and high saturation induction (about 1.09 T or greater).- The alloy has a composition described by the formula (CoaFel_a)100-(b+c)- MnbBc-dsid, where "a" ranges from about 0.90 to 0.99, "b" ranges from about 2 to 6 atom percent, "c" ranges from about 14 to 20 atom percent and "d" ranges from zero to about 7 atom percent, with the proviso that the minimum B present is 10 atom percent. The alloys of the invention find use in magnetic recording heads, switching power supplies, special magnetic amplifiers and the like.

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