Wide iron-based amorphous alloys of precursors to nanocrystalline alloys

An iron-based magnetically soft alloy having a width greater than 63.5 mm, a thickness between 13 and 20 microns, and having a composition represented by the following expression: (Fe1-aMa) 100-x-y-z-p-q-rCuxSiyBzM 'pM "qXr wherein M is Co and/or Ni, M' is at least one element selected from the group consisting of Nb, W, Ta, Zr, Hf, Ti, and Mo; m ''is at least one element selected from the group consisting of V, Cr, Mn, Al, platinum elements, Sc, Y, rare earth elements, Au, Zn, Sn and Re; x is at least one element selected from the group consisting of C, Ge, P, Ga, Sb, In, Be, and As; and a, x, y, z, p, q and r respectively satisfy 0 < = a < = 0.5, 0.1 < = x < = 3, 0 < = y < = 30, 1 < = z < = 25, 5 < = y + z < = 30, 0.1 < = p < = 30, q < = 10 and r < = 10, and the alloy has at least 50% of crystals and an average particle size of 100 nm or less. The alloy has low core loss, high magnetic conductivity and low magnetostriction. 一种宽度大于63.5mm，厚度在13到20微米之间，且具有由以下表达式表示的成分的铁基软磁合金：(Fe1-aMa)100-x-y-z-p-q-rCuxSiyBzM'pM