Localised electro-thermal processing: a new route to the patterning of magnetic recording media

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Localised electro-thermal processing: a new route to the patterning of magnetic recording media

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dc.contributor.author Aziz, Mustafa M. en_US
dc.contributor.author Newman, Dave M. en_US
dc.contributor.author Sidwell, A en_US
dc.contributor.author Wears, M. Lesley en_US
dc.contributor.author Wright, C. David en_US
dc.date.accessioned 2012-09-28T18:18:52Z en_US
dc.date.accessioned 2013-03-20T12:20:54Z
dc.date.issued 2010-11-23 en_US
dc.description.abstract Previous reports have detailed the fabrication of media able to support high density magnetic recording in both longitudinal and perpendicular formats by the global rapid thermal processing of sputtered non-magnetic precursor films. During processing in this manner a magnetic element is released from its nitride and agglomerates to form a random near mono-dispersion of magnetic nano-particles. Here we explore, primarily through modelling and simulation, the feasibility of processing similarly formulated precursor media not globally but locally. We investigate the potential of using conducting nano-probe tips to produce, via electro-thermal (Joule) heating, a nano-patterned recording media in the form of regular arrays of magnetic islands in a non-magnetic host. In the first instance we concentrate on the simplest cobalt based precursor medium for which both initial simulation and experimental studies indicate the formation of magnetic islands with dimensions of the order of the tip diameter is relatively straightforward. The results signify that if practical production scenarios can be devised to produce technologically significant areas of recording media by the rapid multi-probe repetition of this technique, then processing in this manner offers a promising route to areal recording densities of perhaps 5 Terabit/in2 even with the simplest cobalt media. We also note that the electro-thermal processing method is potentially extendable to the production of a wide variety of magnetic materials (eg. PtCo, FeCo, NiFe alloys) and, applied via electrical nano-imprinting type techniques, to the production of a wide variety of patterned structures. en_US
dc.identifier.citation Vol. 21, Issue 50, pp. ? - ? en_US
dc.identifier.doi 10.1088/0957-4484/21/50/505303 en_US
dc.identifier.uri http://hdl.handle.net/10036/3804 en_US
dc.publisher Institute of Physics en_US
dc.relation.url http://iopscience.iop.org/0957-4484/21/50/505303/ en_US
dc.title Localised electro-thermal processing: a new route to the patterning of magnetic recording media en_US
dc.date.available 2012-09-28T18:18:52Z en_US
dc.date.available 2013-03-20T12:20:54Z
exeter.article-number 505303 en_US
exeter.contacts.depositing-owner-email Aziz, Mustafa <M.M.Aziz@exeter.ac.uk> en_US
exeter.contacts.owner-email Wright, Christopher <David.Wright@exeter.ac.uk> en_US
exeter.contacts.owner-email Aziz, Mustafa <M.M.Aziz@exeter.ac.uk> en_US
dc.description notes: A new route to magnetic nanopatterning demonstrated experimentally and via new theoretical model en_US
dc.description publication-status: Published en_US
dc.description types: Article en_US
dc.identifier.journal Nanotechnology en_US


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