Berlin 2015 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 15: Magnetic measurement methods
MA 15.9: Vortrag
Dienstag, 17. März 2015, 11:30–11:45, H 1012
Sensitivity enhancement in microscale cantilever magnetometry — •Julia Körner1, Christopher F. Reiche1, Bernd Büchner1,2, and Thomas Mühl1 — 1Leibniz-Institut für Festkörper- und Werkstoffforschung IFW Dresden — 2Institut für Festkörperphysik, Technische Universität Dresden
The study of magnetic properties of increasingly smaller single particles poses great challenges to researchers. As the probe's size shrinks according to the particle size, an increasing effort has to be taken to gain reliable data from measurements. In case of cantilever magnetometry very low stiffness cantilevers are usually employed. [1]
We have developed a sensor concept which combines a nanowire, e.g. a multi walled carbon nanotube (MWCNT) oscillator, with state-of-the-art cantilever deflection measurement techniques. Due to the small size and low stiffness of the nanowire, it offers high sensitivity for measuring small magnetic particles positioned at its tip when the system is mechanically excited to oscillate. The oscillation states are detected by using conventional laser-deflection.
[1] B. C. Stipe, H. J. Mamin, T. D. Stowe, T. W. Kenny, D. Rugar, Phys. Rev. Lett. 86 (13), 2001