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Epitaxial Graphene Sensors for Detection of Small Magnetic Moments
National Phys Lab, England .
National Phys Lab, England .
Linköping University, Department of Physics, Chemistry and Biology, Semiconductor Materials. Linköping University, The Institute of Technology.
National Phys Lab, England .
2013 (English)In: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 49, no 1, 97-100 p.Article in journal (Refereed) Published
Abstract [en]

Micron-sized Hall sensors made of epitaxial graphene grown on 4H-SiC(0001) have been fabricated and studied at room temperature using transport and noise spectrum measurements. We report detection of 1-mu m Dynal bead with the magnetic moment of similar to 4 x 10(8) mu(B), using a 2-mu m epitaxial graphene device. A phase-sensitive AC-DC Hall magnetometry method was used to reliably detect the bead with a relatively large response of V-x(AC) similar to 7 mu V. Bead positioning was performed using a nanomanipulator inside of the FIB system. Long-term effect of the small dose of e-beam irradiation (similar to 4 x 10(14) e/cm(2))on the performance of graphene Hall devices is reported.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE) , 2013. Vol. 49, no 1, 97-100 p.
Keyword [en]
Dynal bead, electron beam irradiation, epitaxial graphene, Hall sensor, single particle detection
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-88357DOI: 10.1109/TMAG.2012.2218277ISI: 000312831300026OAI: oai:DiVA.org:liu-88357DiVA: diva2:602892
Available from: 2013-02-04 Created: 2013-02-04 Last updated: 2017-12-06

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Yakimova, Rositsa

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