Amorphous alloy is a new type of energy saving material produced by rapid solidification technology, being cooled from molten alloy at a rate of nearly million degrees per second. It has high permeability and low core loss because of the unique long-range disordered atomic structure, which is completely different from that of crystals. Amorphous alloy is widely used in the fields of distribution transformers, inductors, motor stators and sensors, taking the advantage of significantly improving device efficiency and reducing energy consumption.