Abstract: An amorphous, low-retentivity alloy contains cobalt, manganese, silicon and boron. The alloy has the composition(Co.sub.a Ni.sub.b T.sub.c Mn.sub.d Fe.sub.e).sub.100-t (Si.sub.x B.sub.y M.sub.z).sub.t,whereby T is at least one of the elements chromium, molybdenum, tungsten, vanadium, niobium, tantalumn, titanium, zirconium and hafnium and M is at least one of the elements phosphorous, carbon, aluminum, gallium, indium, germanium, tin, lead, arsenic, antimony, bismuth and beryllium and the following relationships apply: 0.39.ltoreq.a.ltoreq.0.99; 0.ltoreq.b.ltoreq.0.40; 0.ltoreq.c.ltoreq.0.08; 0.01.ltoreq.d.ltoreq.0.13; 0.ltoreq.e.ltoreq.0.02; 0.01.ltoreq.d+e.ltoreq.0.13; a+b+c+d+e=1; 18.ltoreq.t.ltoreq.35; 8.ltoreq.xt.ltoreq.24; 4.ltoreq.yt.ltoreq.24; 0.ltoreq.zt.ltoreq.8; and x+y+z=1. The inventive alloy is distinguished by a saturation magnetostriction .ltoreq.5.multidot.10.sup.-6 and is particularly suited for magnetic screens, sound heads and magnetic cores.

Abstract: In an ISDN digital communications system, the transmission between the network termination and the terminal equipment ensues via what is referred to as the S.sub.o interface, on the basis of interface transformers. Since the power supply of the terminal equipment likewise partly ensues via these transformers, a current asymmetry in the lines results in a pre-magnetization of the transformers. Thus, the ISDN demands made of the transformers must also be satisfied given a DC pre-magnetization. Compact transformers having a simple winding format that satisfy the ISDN demands are set forth, the transformers utilizing a magnetic core having a fine-crystalline iron-based alloy with an iron part of more than 60 atomic %, the structure thereof being more than 50% fine-crystalline grains having a grain size of less than 100 nm and having a remanence ratio of less than 0.2 and a permeability in the range from 20,000 to 50,000, and an inductance of less than 100 pF.

Abstract: Amorphous metal tapes are produced by expressing a metallic melt in a supply container through at least one nozzle opening onto a moving surface of a cooling body positioned in relatively close proximity to the nozzle opening. The nozzle opening is 1.5 through 6 mm wide, as measured in the direction of motion of the cooling body surface, which is positioned at a distance of about 0.005 through 0.6 times the width of the nozzle opening from such opening and is moved at a velocity of at least 5 meters per second past such nozzle opening.

Abstract: A method and device for the manufacture of metal bands, particularly of an amorphous metal alloy is provided. The liquid alloy is deposited on a cooling body having a rapidly moving surface, upon which solidification into a metal band occurs. Concurrent with the cooling body surface movement, the cooling body and the melt stream are moved relative to one another at right angles to the direction of the melt stream. This additional movement allows utilization of the entire cooling body surface and not merely that in the plane of the melt stream.