Title :
Sputtered NixP underlayer for CoPt-based thin film magnetic media
Author :
Yamashita, T. ; Chan, L.H. ; Fujiwara, T. ; Chen, Tu
Author_Institution :
Komag Inc., Milpitas, CA, USA
fDate :
11/1/1991 12:00:00 AM
Abstract :
The effect of a sputtered NixP underlayer on the properties of CoPt-based thin film media is discussed. Sputtered NixP has the effect of raising the Hc of the media, and at the same time media noise is reduced. Results from films made from Ni 3P target composition (15 wt.%P) are discussed. Microstructural analysis of the sputtered film indicates that these effects are due to larger intergranular separation, which leads to less interparticle exchange
Keywords :
cobalt alloys; coercive force; crystal microstructure; ferromagnetic properties of substances; magnetic recording; magnetic thin films; magnetisation; nickel alloys; platinum alloys; scanning electron microscope examination of materials; sputtered coatings; transmission electron microscope examination of materials; NixP-CoNiPt thin film magnetic media; SEM; TEM; coercive field; intergranular separation; interparticle exchange; magnetic recording; magnetisation; media noise; microstructural analysis; sputtered NixP underlayer; sputtered film; Amorphous magnetic materials; Amorphous materials; Chromium; Diffraction; Electrons; Magnetic films; Radio frequency; Saturation magnetization; Sputtering; Substrates;
Journal_Title :
Magnetics, IEEE Transactions on
