Amorphous Thin Films Comprising Alloys of Rare-Earth And Transition Metals for Longitudinal Magnetic Recording Media
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02
Amorphous alloys of terbium, iron and cobalt (TbFeCo) can be deposited as thin films which exhibit in-plane magnetic anisotropy. Such films formed by DC magnetron bias sputtering exhibit a nearly perfect in-plane magnetic hysteresis loop with excellent coercivity and remanent magnetization-thickness product. The films are amorphous within a wide range of compositions of the elements comprising the alloy. The amorphous nature of such films may decrease the write noise of the media.