Moment switching in nanotube magnetic force probes

Details Moment switching in nanotube magnetic force probes Moment switching in nanotube magnetic force probes

2007-04-03

arxiv.org/abs/0704.0311v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

10 pages

Scientific paper

10.1088/0957-4484/18/46/465506

A recent advance in improving the spatial resolution of magnetic force microscopy (MFM) uses as sensor tips carbon nanotubes grown at the apex of conventional silicon cantilever pyramids and coated with a thin ferromagnetic layer. Magnetic images of high density vertically recorded media using these tips exhibit a doubling of the spatial frequency under some conditions. Here we demonstrate that this spatial frequency doubling is due to the switching of the moment direction of the nanotube tip. This results in a signal which is proportional to the absolute value of the signal normally observed in MFM. Our modeling indicates that a significant fraction of the tip volume is involved in the observed switching, and that it should be possible to image very high bit densities with nanotube magnetic force sensors.

Affiliated with

Also associated with

No associations

Rating

Moment switching in nanotube magnetic force probes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Moment switching in nanotube magnetic force probes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Moment switching in nanotube magnetic force probes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-255646