BUBBLE DOMAIN SONIC PROPAGATION DEVICE

摘要

A single wall magnetic domain or bubble is advanced in a sheet of magnetic material such as an orthoferrite by means of a sonic stress wave propagated through a contiguous channel-defining member of anisotropic, magnetostrictive material such as permalloy. A sonic stress wave propagated through the permalloy member causes a propagated region in which the direction of magnetization in the permalloy is partially rotated. The propagated region of rotated magnetization urges the magnetic bubble in the same direction along a path in the orthoferrite.