Method of manufacturing an amorphous magnetic alloy

摘要

A method of manufacturing an amorphous magnetic alloy having high permeability comprises the steps of: preparing an amorphous magnetic alloy ribbon having major surfaces; annealing said magnetic alloy ribbon at a temperature lower than the crystallization temperature of said alloy under the application of a first magnetic field in a first direction along said major surface for a period sufficient to induce a magnetic anisotropy in said first direction; and annealing said magnetic alloy ribbon at a temperature lower than the crystallization temperature of said alloy under the application of a second magnetic field in a second direction perpendicular to said first direction along said major surface until the induced magnetic anisotropies in said first and second directions become equal to each other.