Abstract: A method of forming a layer of a magnetic material with radially oriented magnetic anisotropy, comprising sequential steps of providing a circular, annular disk-shaped substrate having an inner diameter and an outer diameter, forming a layer of a magnetic material with non-radially oriented magnetic anisotropy over at least one surface of the substrate, and re-orienting the magnetic anisotropy in a radial direction. Preferably, the re-orientation is performed magnetically and the radially oriented layer serves as a magnetically soft underlayer (SUL) of a magnetic recording medium. Also disclosed is a multi-chamber apparatus for performing the disclosed process.
Type:
Grant
Filed:
June 2, 2005
Date of Patent:
November 26, 2013
Assignee:
Seagate Tchnology LLC
Inventors:
Paul S. McLeod, Charles F. Brucker, Jeffrey S. Reiter