Nano-magnetic head and nano-magnetic head device using the same
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United States of America Patent
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May 11, 2004
Grant Date -
May 22, 2003
app pub date -
Nov 21, 2001
filing date -
Nov 21, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A nano-magnetic head for inputting and outputting magnetic signals with nano-region precision on a magnetic recording medium such as magnetic tapes, magnetic cards, magnetic disks, magnetic drums, etc. The nano-magnetic head uses a nanotube with its base end portion fastened to a holder that is at an end of an AFM cantilever. The tip end portion of the nanotube protrudes from the holder, and a nanocoil is wound around the outer circumference of the tip end portion of the nanotube so that signals are inputted and outputted at both ends of the nanocoil. By way of lining up ferromagnetic metal atoms in the hollow portion of the nanotube, it is possible to strengthen the magnetic signal. The nano-magnetic head is combinable with a signal controller, thus forming a nano-magnetic head device.
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