Recording Performance Study of PMR Media With Patterned Tracks

Discrete track recording technology offers a potential advantage in reducing adjacent track erasure/interference. As nano-imprinting technology advances, fabrication of such media has been demonstrated. In recent years, discrete track recording has generally been viewed as one of the next promising...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2007-06, Vol.43 (6), p.2292-2294
Main Authors: Xiaodong Che, Yawshing Tang, Hyung Jai Lee, Shuyu Zhang, Ki-Seok Moon, Na-Young Kim, Soo-Youl Hong, Takahashi, N., Moneck, M., Jian-Gang Zhu
Format: Article
Language:English
Subjects:
Cross-disciplinary physics: materials science
rheology
Density
Density measurement
Disk recording
Electron beam lithography
Exact sciences and technology
Flying
Lithography
Magnetic heads
Magnetic separation
Magnetism
Materials science
Media
Monitoring
Moon
Nanocomposites
Nanomaterials
Nanostructure
Other topics in materials science
patterned media
Perpendicular magnetic recording
perpendicular magnetic recording (PMR)
Physics
Recording
Signal to noise ratio
Target tracking
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Summary:Discrete track recording technology offers a potential advantage in reducing adjacent track erasure/interference. As nano-imprinting technology advances, fabrication of such media has been demonstrated. In recent years, discrete track recording has generally been viewed as one of the next promising technologies for areal density advancement. In this study, we evaluated the recording performance of PMR media with patterned tracks. To accurately assess the advantage of discrete track performance and compare with current continuous media, both recording performances were measured on one single track. The head flying height is monitored on the patterned and continuous media regions. At 100-nm data track width, patterned tracks show noticeably better signal-to-noise ratio and significantly lower adjacent track erasure compared with continuous media at the same track width. Such measured performance advantages are critical to increase track density beyond 300-400 ktpi
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2007.896207