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

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2280

Lastpage

2282

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;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104697

Filename

104697