A method of manufacture of thin film magnetic disks and other useful articles of similar planar geometry in which a non-magnetic layer is first deposited on one or both sides of the disk or article substrate to mask chemical and mechanically induced heterogeneities introduced by pre-polishing to achieve...http://www.google.com.au/patents/US6986956?utm_source=gb-gplus-sharePatent US6986956 - Method of coating smooth electroless nickel on magnetic memory disks and related memory devices
