Title :
Magnetic and crystallographic properties of sputtered Co-Ni-Zr films on Cr, Mo and W underlayer
Author :
Suzuki, H. ; Tsumita, N. ; Hayashi, M. ; Shiroishi, Y. ; Matsuda, Y.
Author_Institution :
Hitachi Ltd., Kanagawa, Japan
fDate :
9/1/1990 12:00:00 AM
Abstract :
Read and write characteristics and magnetic and crystallographic properties of sputtered Co-Ni-Zr on Cr, Mo, and W underlayers are investigated. The crystal grains of the underlayer and the magnetic layer are rice-like and consist of 2 to 10 columnar subgrains. The coercivity of composite films depends on the size of subgrains, reaching a maximum when the magnetic crystal size is about 40 nm. Media noise is proportional to the square root of the length of the rice-like grains; this can be explained by particle-noise theory
Keywords :
cobalt alloys; coercive force; crystal atomic structure of alloys; ferromagnetic properties of substances; magnetic tapes; magnetic thin films; nickel alloys; sputtered coatings; zirconium alloys; CoNiZr-Cr; CoNiZr-Mo; CoNiZr-W; Cr; Mo; W; coercivity; columnar subgrains; composite films; crystallographic properties; magnetic crystal size; magnetic layer; magnetic properties; particle-noise theory; sputtered films; underlayers; Chromium; Cobalt alloys; Coercive force; Crystallography; Magnetic films; Magnetic noise; Magnetic properties; Magnetic separation; Sputtering; Substrates;
Journal_Title :
Magnetics, IEEE Transactions on
