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Novel Polymer Templated Lithography Technique for Fabrication of Ni Nanodots for Bit Patterned Media Applications

Shodhganga@INFLIBNET

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Title Novel Polymer Templated Lithography Technique for Fabrication of Ni Nanodots for Bit Patterned Media Applications
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Contributor Ponnavaikko.M
 
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Description Magnetic disk drive technology has successfully reduced the size of multi-grain bits to
newline~30 nm, and there are intensive efforts to shrink the bit size further. The new generation
newlinehard disk drives shipped by Seagate Technologies around August 2009 boasts of
newlinerecording densities of around 500 GB/inch2 using a combination of vertical recording,
newlinewrite head lithography, use of magnetoresistance sensors and better recording media.
newlineThough the research and development in this field is progressing at a fast pace the areal
newlinedensities achievable using conventional scaling is limited to the so-called trilemma
newlineproblem of satisfying the concurrent requirements of thermal stability, writability, and
newlineachieving a high signal to noise ratio.
newlineThough technologies such as heat assisted recording and phase change memory are being
newlineexplored as future data storage technologies, there has also been great interest in bit
newlinepatterned media (BPM), where arrays of isolated magnetic nanodots act as individual bits
newlinewhich can be read and written by controlling their magnetization. One of the obvious
newlineadvantages of BPM technique is that it would allow us to write one bit on a single grain
newlineas compared to the standard procedure of averaging a single bit over 25 30 grains (to
newlineprevent data loss due to thermal fluctuations and the demagnetizing field of the adjacent
newlinegrains)
newline
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Date 2014-12-19T09:52:25Z
2014-12-19T09:52:25Z
2014-12-19
14-3-2007
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Type Ph.D.
 
Identifier http://hdl.handle.net/10603/31204
 
Language English
 
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Rights university
 
Format —
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DVD
 
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Publisher Kattankulathur
SRM University
Department of Nano science and Nano technology
 
Source University