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Schneiderbauer, Maximilian ; Wastl, Daniel S. ; Giessibl, Franz J.

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.



Involved Institutions


Details

Item typeArticle
Journal or Publication TitleBeilstein Journal of Nanotechnology
Publisher:BEILSTEIN-INSTITUT
Place of Publication:FRANKFURT AM MAIN
Volume:3
Page Range:pp. 174-178
Date29 February 2012
InstitutionsPhysics > Institute of Experimental and Applied Physics > Chair Professor Giessibl > Group Franz J. Giessibl
Identification Number
ValueType
10.3762/bjnano.3.18DOI
KeywordsQUARTZ TUNING FORK; SCANNING TUNNELING MICROSCOPE; ATOMIC-RESOLUTION; CANTILEVERS; SURFACE; hard disc; high-stiffness cantilever; magnetic force microscopy; qPlus
Dewey Decimal Classification500 Science > 530 Physics
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgYes
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-235317
Item ID23531

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