Patent ID: 6205052
Filing Date: 2001-03-20
Classification: B82Y,H01F,H01L

Abstract:
A magnetic element comprising:a base metal layer having an uppermost surface;a first electrode positioned on the uppermost surface of the base metal layer, the first electrode including a ferromagnetic layer;a second electrode positioned spaced apart from the first electrode, the second electrode including a ferromagnetic layer;wherein the ferromagnetic layers of the first electrode and the second electrode include in combination a fixed ferromagnetic layer and a free ferromagnetic layer, the fixed ferromagnetic layer having a magnetization that is fixed in a preferred direction in the presence of an applied magnetic field capable of switching the free layer, and the free ferromagnetic layer having a magnetization that is free to rotate between magnetization states in the presence of an applied magnetic field;a spacer layer located between the ferromagnetic layer of the first electrode and the ferromagnetic layer of the second electrode;wherein one of the layers formed below the spacer layer is an x-ray amorphous structure such that reduced topological coupling strength between the free ferromagnetic layer and the fixed ferromagnetic layer is achieved; anda substrate, the base metal layer, the first and second electrodes, and the spacer layer, being formed on the substrate.