Abstract
Single-crystal thin films of Co-alloy materials with hcp-crystal structure are prepared on oxide single crystal substrates. The orientation of easy magnetization axis(c-axis in hcp-crystals structure)can be controlled either parallel or perpendicular to the film plane by selecting the crystallographic orientation of the substrate. The epitaxial relationship between the magnetic layer, the underlayer, and the substrate are determined. The microstructures of magnetic thin films are investigated by using a high-resolution transmission electron microscope. Using these single crystal thin films, important basic magnetic properties like magneto-crystalline anisotropy constants(Ku)can be determined.
