Perpendicular magnetic recording by probe

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Perpendicular magnetic recording by probe

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An investigation has been carried out into perpendicular recording with a cylindrical probe head onto three different types of media: single crystals, coercive media and patterned media. The theory of the recording of cylindrical domains onto single crystal and coercive media has shown many similarities between the processes and similar performances in terms of areal packing densities. The recording of transitions in coercive media and recording onto patterned media has likewise been investigated and expressions are derived for the corresponding packing densities which are much higher than for the recording of cylindrical domains. The critical parameters in all cases are highlighted.

Inspec keywords: magnetic domains; magnetisation; perpendicular magnetic recording; probes; coercive force; stability

Other keywords: single crystals; patterned media; coercive media; cylindrical domains; perpendicular magnetic recording; areal packing densities; cylindrical probe head

Subjects: Magnetic recording

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