Radiant energy – Inspection of solids or liquids by charged particles
Reexamination Certificate
2005-12-28
2009-02-24
Berman, Jack I. (Department: 2881)
Radiant energy
Inspection of solids or liquids by charged particles
C250S307000, C977S842000, C977S840000
Reexamination Certificate
active
07495215
ABSTRACT:
The present invention provides a probe for a scanning magnetic force microscope having a resolution sufficient to allow observation of a magnetic storage medium with 1200 kFCI or higher recording densities, a method for producing the probe, and a method for forming a ferromagnetic alloy film on a carbon nanotube. In the context of the present invention, the probe for a scanning magnetic force microscope comprises a carbon nanotube whose surface is at least in part coated with a ferromagnetic alloy film consisting of any one of a Co—Fe alloy and a Co—Ni alloy, wherein the arithmetic mean roughness (Ra 10 μm) of the surface of the ferromagnetic alloy film is controlled to 1.15 nm or less. A method for producing such probes for a scanning magnetic force microscope and a method for forming such a ferromagnetic alloy film on a carbon nanotube, so as to achieve such mean surface roughness by controlling the growth rate of the ferromagnetic alloy film within the range of 1.0 to 2.5 nm/min, is also disclosed.
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Akinaga Hiroyuki
Kuramochi Hiromi
Semba Yasuyuki
Yasutake Masatoshi
Yokoyama Hiroshi
Berman Jack I.
National Institute of Advanced Industrial Science and Technology
Seed IP Law Group PLLC
SII Nanotechnology Inc.
Smyth Andrew
LandOfFree
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