METHOD OF FORMING MULTIPLE-LAYER STRUCTURES INCLUDING MAGNETIC DOMAINS

摘要

A composite consisting of multiple-layer structures, the basic structure of which is a chemically vapor-deposited film on a substrate wafer, disclosed herein. The film is of such material appropriate for creating therein single-wall magnetic domains which are capable of being moved about in predetermined directions within the thickness of the film and in the plane of the film. Devices are adapted to the film for sensing the motion of these domains thereby enabling application of these structures toward circuits which may be particularly utilized in memory or logic applications. A complete family of film on substrate materials are fabricated through a unique process, one of the steps of the process relates to establishment of the exact location of the substrate within the reactor at which deposition of the film upon the substrate is to be made in order to obtain the desired film characteristics. Included are provisions for making multiple film layers to result in a matrix of films and hence a multitude of such circuits. Films used are comprised of at least three and four elements.