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qPlus magnetic force microscopy in frequencymodulation mode with millihertz resolution
Schneiderbauer, Maximilian, Wastl, Daniel S.
and Giessibl, Franz J.
(2012)
qPlus magnetic force microscopy in frequencymodulation mode with millihertz resolution.
Beilstein Journal of Nanotechnology 3, pp. 174-178.
Date of publication of this fulltext: 13 Mar 2012 11:39
Article
DOI to cite this document: 10.5283/epub.23531
Abstract
Magnetic force microscopy (MFM) allows one to image the domain structure of ferromagnetic samples by probing the dipole forces between a magnetic probe tip and a magnetic sample. The magnetic domain structure of the sample depends on the alignment of the individual atomic magnetic moments. It is desirable to be able to image both individual atoms and domain structures with a single probe. ...
Magnetic force microscopy (MFM) allows one to image the domain structure of ferromagnetic samples by probing the dipole forces between a magnetic probe tip and a magnetic sample. The magnetic domain structure of the sample depends on the alignment of the individual atomic magnetic moments. It is desirable to be able to image both individual atoms and domain structures with a single probe. However, the force gradients of the interactions responsible for atomic contrast and those causing domain contrast are orders of magnitude apart, ranging from up to 100 Nm(-1) for atomic interactions down to 0.0001 Nm(-1) for magnetic dipole interactions. Here, we show that this gap can be bridged with a qPlus sensor, with a stiffness of 1800 Nm(-1) (optimized for atomic interaction), which is sensitive enough to measure millihertz frequency contrast caused by magnetic dipole-dipole interactions. Thus we have succeeded in establishing a sensing technique that performs scanning tunneling microscopy, atomic force microscopy and MFM with a single probe.
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Details
| Item type | Article | ||||
| Journal or Publication Title | Beilstein Journal of Nanotechnology | ||||
| Publisher: | BEILSTEIN-INSTITUT | ||||
|---|---|---|---|---|---|
| Place of Publication: | FRANKFURT AM MAIN | ||||
| Volume: | 3 | ||||
| Page Range: | pp. 174-178 | ||||
| Date | 29 February 2012 | ||||
| Institutions | Physics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Franz J. Giessibl | ||||
| Identification Number |
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| Keywords | QUARTZ TUNING FORK; SCANNING TUNNELING MICROSCOPE; ATOMIC-RESOLUTION; CANTILEVERS; SURFACE; hard disc; high-stiffness cantilever; magnetic force microscopy; qPlus | ||||
| Dewey Decimal Classification | 500 Science > 530 Physics | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Yes | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-235317 | ||||
| Item ID | 23531 |
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