Rotational hysteresis and self-organized criticality in magnetic recording media

1996 ◽  
Vol 79 (8) ◽  
pp. 4635 ◽  
Author(s):  
T. L. Templeton ◽  
A. S. Arrott
Keyword(s):  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Self Organized ◽  
Rotational Hysteresis ◽  
Self Organized Criticality

Fabrication of Magnetic Nanodot Arrays for Patterned Magnetic Recording Media

2007 ◽  
Vol 7 (1) ◽  
pp. 225-231 ◽  
Author(s):  
Hirotaka Sato ◽  
Takayuki Homma
Keyword(s):  
Magnetic Recording ◽  
Magnetic Thin Films ◽  
Recording Media ◽  
Probe Type ◽  
Magnetic Recording Media ◽  
Machining Processes ◽  
Patterned Media ◽  
Self Organized ◽  
Deposition Processes ◽  
Magnetic Dots

Fabrication processes of arrayed magnetic nanodots for the use of patterned magnetic recording media were reviewed. One candidate for the patterned media is ordered assemble of magnetic nanoparticles, and the other is patterned magnetic thin films fabricated using various micro/nano scale machining processes. For the formation of patterned masks and molds, lithography processes as well as self-organized pattern formation are utilized. For the deposition processes of magnetic dots, electrochemical deposition processes were widely used. These fabrication processes are reviewed mainly from recent reports. The recording systems for the patterned media including probe-type-recording are also overviewed.

A multi-functional testing instrument for heat assisted magnetic recording media

2014 ◽  
Vol 115 (17) ◽  
pp. 17B726 ◽  
Author(s):  
H. Z. Yang ◽  
Y. J. Chen ◽  
S. H. Leong ◽  
C. W. An ◽  
K. D. Ye ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Recording Media ◽  
Functional Testing ◽  
Magnetic Recording Media ◽  
Testing Instrument ◽  
Heat Assisted Magnetic Recording

Lubricant Removal, Degradation, and Recovery on Particulate Magnetic Recording Media

1992 ◽  
Vol 114 (1) ◽  
pp. 61-67 ◽  
Author(s):  
V. J. Novotny ◽  
T. E. Karis ◽  
N. W. Johnson
Keyword(s):  
Bulk Viscosity ◽  
Magnetic Recording ◽  
Photoelectron Spectroscopy ◽  
Removal Rate ◽  
Lateral Diffusion ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Removal Rates ◽  
Linear Chains ◽  
Mechanical Durability

Lubrication of particulate magnetic recording media improves their mechanical durability in sliding and flying by several orders of magnitude compared with unlubricated media. Lubricant removal, degradation, and recovery were studied using microslit scanning Fourier transform infrared spectroscopy and microspot scanning X-ray photoelectron spectroscopy. These techniques measure the total and surface lubricant amounts in the porous film, respectively. Lubricant dynamics were compared for two physisorbed polyperfluoroalkylether lubricants of similar molecular weight but different molecular structure—Y with a CF3 side group and Z with linear chains. The bulk viscosity of Y was about ten times higher than the viscosity of Z. In sliding, the lubricant removal rate of Y was significantly higher than that of Z while in flying the removal rates were reversed. Removal rates in sliding were orders of magnitude higher than those in flying. Effective lateral diffusion coefficients estimated from the rate of lubricant reflow back to the depleted tracks were close to inversely proportional to the bulk viscosity. During sliding and flying both lubricants degraded as evidenced by chemically altered lubricant detected on the surfaces after dissolution of undegraded lubricant.

Development of CoX/Pd multilayer perpendicular magnetic recording media with granular seed layers

2002 ◽  
Vol 242-245 ◽  
pp. 297-303 ◽  
Author(s):  
Yukiko Kubota ◽  
Dieter Weller ◽  
Mei-Ling Wu ◽  
Xiaowei Wu ◽  
Ganping Ju ◽  
...  
Keyword(s):  
Magnetic Recording ◽  
Recording Media ◽  
Magnetic Recording Media ◽  
Perpendicular Magnetic Recording ◽  
Seed Layers
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