The dependence of media noise on the magnetic cluster size for Co based thin film media fabricated under ultra clean sputtering process

1998 ◽  
Vol 34 (4) ◽  
pp. 1573-1575 ◽  
Author(s):  
M. Takahashi ◽  
A. Kikuchi ◽  
H. Hara ◽  
H. Shoji
Keyword(s):  
Thin Film ◽  
Cluster Size ◽  
Magnetic Cluster ◽  
Media Noise

The effect of cluster size on thin film media noise

1995 ◽  
Vol 31 (2) ◽  
pp. 1013-1024 ◽  
Author(s):  
J.J. Miles ◽  
M. Wdowin ◽  
J. Oakley ◽  
B.K. Middleton
Keyword(s):  
Thin Film ◽  
Cluster Size ◽  
Media Noise

Compositional Microstructure and Micromagnetics of Co-Based Thin Film Media

1998 ◽  
Vol 517 ◽  
Author(s):  
M. Futamoto ◽  
N. Inaba ◽  
Y. Hirayama ◽  
K. Ito ◽  
Y. Honda
Keyword(s):  
Thin Film ◽  
Grain Boundaries ◽  
Compositional Analysis ◽  
Magnetic Cluster ◽  
Perpendicular Media ◽  
Media Noise ◽  
Noise Characteristics ◽  
Transmission Electron ◽  
Electron Microscopes ◽  
Substrate Temperatures

AbstractElemental segregation of CoCrTa and CoCrPt thin films for longitudinal and perpendicular media is investigated using high spacial resolution transmission electron microscopes equipped with compositional analysis facilities. Strong Cr segregation exceeding 20 at% within 1.5-2 nm width is observed along the grain boundaries for both types of CoCrTa films prepared at elevated substrate temperatures. Weaker Cr segregation is observed along the grain boundaries of the longitudinal and the perpendicular CoCrPt films. The strong Cr segregation at grain boundaries is related with the small magnetic cluster size and the low media noise characteristics of CoCrTa thin film media. The Cr content inside the grain is several % lower than the average composition of the CoCrTa films. The magnetocrystalline anisotropy constants(Ku) for different Cr compositions are determined using single crystalline thin film technology to discuss the thermal stability of recorded information.

Thin Film Deposition and Growth Processes by Ionized Cluster Beams

1990 ◽  
Vol 206 ◽  
Author(s):  
I. Yamada ◽  
G.H. Takaoka ◽  
H. Usui ◽  
S.K. Koh
Keyword(s):  
Thin Film ◽  
Cluster Size ◽  
Molecular Beam ◽  
Film Growth ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Atomic Scale ◽  
Cluster Beam ◽  
Film Nucleation ◽  
Cluster Beams

ABSTRACTAtomic scale imaging by STM and TEM of the initial stages of film growth of Ag and Au on graphite substrates indicate that the film nucleation processes are markedly different for ionized cluster beam (ICB) and molecular beam (MBE) deposition. Recent results on measurements of cluster size and formation of epitaxial metal-semiconductor layers by ICB are also discussed.

Analysis of Relation Between Magnetic Cluster Size Distribution and Signal Quality for High-Density Recording

2010 ◽  
Vol 46 (6) ◽  
pp. 1576-1579 ◽  
Author(s):  
Mitsuhiro Hashimoto ◽  
Naoto Ito ◽  
Hidekazu Kashiwase ◽  
Takayuki Ichihara ◽  
Hiroyuki Nakagawa ◽  
...  
Keyword(s):  
Size Distribution ◽  
Cluster Size ◽  
High Density ◽  
Cluster Size Distribution ◽  
Signal Quality ◽  
Magnetic Cluster ◽  
High Density Recording

A study on thin-film-media noise by magnetic domain observation

1988 ◽  
Vol 24 (6) ◽  
pp. 2715-2717 ◽  
Author(s):  
H. Aoi ◽  
R. Tsuchiya ◽  
Y. Shiroishi ◽  
H. Matsuyama
Keyword(s):  
Thin Film ◽  
Magnetic Domain ◽  
Media Noise

Effect of microstructure on media noise of CoCrTa thin film media fabricated under ultra clean sputtering process

1995 ◽  
Vol 31 (6) ◽  
pp. 2833-2835 ◽  
Author(s):  
J. Nakai ◽  
A. Kikuchi ◽  
M. Kuwabara ◽  
T. Sakurai ◽  
T. Shimatsu ◽  
...  
Keyword(s):  
Thin Film ◽  
Media Noise ◽  
Effect Of Microstructure

Media noise of sputtered metallic thin film disks

1989 ◽  
Vol 4 (11) ◽  
pp. 680-691 ◽  
Author(s):  
N. Koga ◽  
S. Ito ◽  
H. Tomiyasu
Keyword(s):  
Thin Film ◽  
Media Noise ◽  
Metallic Thin Film
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