During the past decade a new class of magnetic materials-amorphous metals, has been under development. This material offers the potential of reducing the core losses of motors dramatically due to its excellent magnetic performance. Thus, the incentive is tremendous to develop cost-competitive motors utilizing amorphous alloys. However, there were some deficiency of a relatively high brittleness and a low stacking factor, which makes it difficult to stamp or cut the material to the shapes that motors required. This paper will briefly review some of the important process technical of magnetic amorphous alloys cores and will describe the results of applying this material in all kind of test motors.