The Role of Surface Science in Magnetic Recording Tribology

2011 ◽  
pp. 457-505
Author(s):  
Tom Karis
Keyword(s):  
Surface Science ◽  
Magnetic Recording

Transmission Electron Microscopy studies of texture of Cr underlayer of magnetic recording hard disk

1991 ◽  
Vol 49 ◽  
pp. 580-581
Author(s):  
L. Tang ◽  
G. Thomas ◽  
M. R. Khan ◽  
S. L. Duan
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Transmission Electron Microscopy ◽  
Magnetic Recording ◽  
Magnetic Thin Films ◽  
Magnetic Films ◽  
Substrate Bias ◽  
Epitaxial Relationship ◽  
Transmission Electron

Cr thin films are often used as underlayers for Co alloy magnetic thin films, such as Co1, CoNi2, and CoNiCr3, for high density longitudinal magnetic recording. It is belived that the role of the Cr underlayer is to control the growth and texture of the Co alloy magnetic thin films, and, then, to increase the in plane coercivity of the films. Although many epitaxial relationship between the Cr underlayer and the magnetic films, such as ﹛1010﹜Co/ {110﹜Cr4, ﹛2110﹜Co/ ﹛001﹜Cr5, ﹛0002﹜Co/﹛110﹜Cr6, have been suggested and appear to be related to the Cr thickness, the texture of the Cr underlayer itself is still not understood very well. In this study, the texture of a 2000 Å thick Cr underlayer on Nip/Al substrate for thin films of (Co75Ni25)1-xTix dc-sputtered with - 200 V substrate bias is investigated by electron microscopy.

The role of stress-induced anisotropy in longitudinal thin film magnetic recording media

1996 ◽  
Vol 79 (8) ◽  
pp. 5342 ◽  
Author(s):  
C. A. Ross ◽  
M. E. Schabes ◽  
R. Ranjan ◽  
G. Bertero ◽  
T. Chen
Keyword(s):  
Thin Film ◽  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Induced Anisotropy ◽  
Stress Induced Anisotropy

Roughness-Induced Shear- and Squeeze-Film Effects in Magnetic Recording—Part I: Analysis

1989 ◽  
Vol 111 (2) ◽  
pp. 220-227 ◽  
Author(s):  
Bharat Bhushan ◽  
Kristian To̸nder
Keyword(s):  
Magnetic Recording ◽  
Design Guidelines ◽  
Squeeze Film ◽  
Operating Parameters ◽  
Periodic Motions ◽  
Average Flow ◽  
Thickness Standard ◽  
Orientation Parameters ◽  
Rarefaction Effects

General analyses are developed to predict the role of surface roughness, rarefaction effects, and various operating parameters in thin-film gas lubrication. Both shear- and squeeze-film effects are considered. The squeeze-film analysis is developed for transient and periodic motions. The analyses are based on average flow (roughness) factors. The results are presented in terms of Knudsen number, h/σ (film thickness/standard deviations of composite roughness) and roughness-orientation parameters. The appropriate analyses presented in this paper are simple and can be applied to magnetic recording and other applications to provide design guidelines.

The role of Ta and Pt in segregation within Co-Cr-Ta and Co-Cr-Pt thin film magnetic recording media

1996 ◽  
Vol 79 (8) ◽  
pp. 5345 ◽  
Author(s):  
K. M. Kemner ◽  
V. G. Harris ◽  
V. Chakarian ◽  
Y. U. Idzerda ◽  
W. T. Elam ◽  
...  
Keyword(s):  
Thin Film ◽  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media
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