Modeling and design of discrete track recording media

Roddick, Eric; Wachenschwanz, D.; Jiang, Wen Yan

doi:10.1109/tmag.2005.854781

Cited by 10 publications

(3 citation statements)

References 7 publications

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“…If we want to release DTM at a price commensurate with increased recording capacity for commercial application, we must solve these problems to achieve a marketable product. The down-track direction of DTM is still continuous, however, and the SNR gain due to physical track separation is estimated as being not so large [9]. Therefore, we should continue to solve the same problems as those of granular media mentioned above.…”

Section: Dtmmentioning

confidence: 99%

The current status and future of granular media

Takenoiri

2009

Journal of Magnetism and Magnetic Materials

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Section: Dtmmentioning

confidence: 99%

The current status and future of granular media

Takenoiri

2009

Journal of Magnetism and Magnetic Materials

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“…[4][5][6][7][8][9][10][11][12] Since perpendicular recording technology using thin film technology will soon be reaching its limit, patterned media are gaining much attention. [4][5][6][7][8][9][10][11][12] Since perpendicular recording technology using thin film technology will soon be reaching its limit, patterned media are gaining much attention.…”

Section: Introductionmentioning

confidence: 99%

“…[4][5][6][7][8][9][10][11][12] Since perpendicular recording technology using thin film technology will soon be reaching its limit, patterned media are gaining much attention. 7,13 NIL has already been successfully used in the mass production of next-generation, high capacity digital video discs, and Blu-ray disks. 2 or greater can be achieved.…”

Section: Introductionmentioning

confidence: 99%

Nanoimprint mold fabrication and duplication for embedded servo and discrete track recording media

Tan

Aung

Sbiaa

et al. 2009

Journal of Vacuum Science &Amp; Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena

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Articles you may be interested inFabrication of wafer-scale nanopatterned sapphire substrate by hybrid nanoimprint lithography J. Vac. Sci. Technol. B 32, 06FG06 (2014); 10.1116/1.4898778 Design and fabrication of a metallic nanostamp using UV nanoimprinting and electroforming for replicating discrete track media with feature size of 35 nm J. Vac. Sci. Technol. B 31, 011801 (2013); 10.1116/1.4768685 Fabrication of 1 Teradot/in.2 CoCrPt bit patterned media and recording performance with a conventional read/write head J. Vac. Sci. Technol. B 30, 06FH01 (2012); 10.1116/1.4757955Fabrication of silicon template with smooth tapered sidewall for nanoimprint lithography Fabrication of a seamless roll mold by direct writing with an electron beam on a rotating cylindrical substrate A master mold for nanoimprint lithography was fabricated for discrete track recording ͑DTR͒ media using electron beam lithography and conventional etching techniques. The DTR pattern, containing 167 tracks of 120 nm pitch ͑60 nm land and groove widths͒ and embedded servo information, was automatically generated using an in-house developed program and was optimized for faster electron beam writing on an x-y stage. A daughter mold was duplicated from the master mold by nanoimprinting, using UV-curable resist and an intermediate polymer stamp technique. Scanning electron microscope images showed that the daughter mold was accurately and completely reproduced from the master mold.

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Measurement of spreading characteristics of molecularly thin lubricant films over grooved solid surfaces based on diffraction simulations

et al. 2006

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Characteristics of molecularly thin lubricant films are basically determined by their interactions with solid surfaces. Since these interactions can be modified by engineered microscopic surface textures, it is expected that rational design of the textures will make it possible to attain desired tribological functions and performance. In this research, with the aim of applying it to head-disk interface of hard disk drives, we propose a method based on diffraction simulations that enables thickness measurement of molecularly thin films coated on grooved solid surfaces. Using this method, we experimentally investigate the spreading characteristics of nanometer-thick polymeric liquid lubricant films on grooved surfaces. The results revealed that the average thicknesses of the films dipcoated on the grooved and smooth surfaces under identical conditions were approximately the same, whereas lubricant spreading on grooved surfaces was significantly faster than that on smooth surfaces.

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Modeling and design of discrete track recording media

Cited by 10 publications

References 7 publications

The current status and future of granular media

The current status and future of granular media

Nanoimprint mold fabrication and duplication for embedded servo and discrete track recording media

Measurement of spreading characteristics of molecularly thin lubricant films over grooved solid surfaces based on diffraction simulations

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