MAGNETIC STRUCTURE WITH MULTIPLE-BIT STORAGE CAPABILITIES
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United States of America Patent
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Issued Date -
Jun 10, 2010
app pub date -
Jan 2, 2008
filing date -
Jan 27, 2007
priority date (Note) -
Abandoned
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Abstract
A magnetic structure (2) comprising a magnetic layer (18) having an upper surface and a lower surface is disclosed. The magnetic layer comprises a plurality of regions, each of which is adapted to be magnetised predominantly along a first or second direction. The magnetic layer further comprises at least one structured feature (21) adapted to prevent passage of a magnetic domain wall (26) of a respective type and at least one second structural feature (22) adapted to prevent propagation of at least one magnetic domain wall (34) of a second type. A data storage device (46) incorporating the magnetic structure is also disclosed.
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