Inventors:
Ho Sou Chen - Warren NJ
Ernst Michael Gyorgy - Madison NJ
Harry John Leamy - New Providence NJ
Richard Curry Sherwood - New Providence NJ
International Classification:
H01F 100
C22B 4300
Abstract:
The disclosed magnetic devices, including a magnetically coupled conducting path, incorporate amorphous, low magnetostriction alloys of the general formula (Co. sub. a Fe. sub. b T. sub. c). sub. i X. sub. j, the "metallic" constituents thereof being within the parenthetical expression. T, in the formulation, is selected from among Ni, Cr, Mn, V, Ti, Mo, W, Nb, Zr, Pd, Pt, Cu, Ag and Au, X being at least one "glass former" selected from among P, Si, B, C, As, Ge, Al, Ga, In, Sb, Bi and Sn. The "metallic" constituents comprise from 70-90 atomic percent of the alloy with cobalt being present in an amount of at least 70 atomic percent of the "metallic" constituents. The described material is prepared by rapid cooling from the liquid, directly to the shape needed for fabrication of the device (e. g. , tape to be wound to form an inductor core). When the amorphous material is fabricated to its finished geometry, raised to a temperature somewhat below its crystallization temperature and quenched in a high heat of vaporization liquid (e. g.