Effective sensor properties and sensitivity considerations of a dynamic co-resonantly coupled cantilever sensor

• Julia Körner

Beilstein J. Nanotechnol. 2018, 9, 2546–2560, doi:10.3762/bjnano.9.237

• as well as sensor fabrication with regard to coupling and eigenfrequency matching can for example be found in [13] and [15]. The sensor concept was tested experimentally in magnetic measurements. In cantilever magnetometry, individual Co2FeGa Heusler nanoparticles were studied with respect to their

Magnetic properties of optimized cobalt nanospheres grown by focused electron beam induced deposition (FEBID) on cantilever tips

• Soraya Sangiao,
• César Magén,
• Darius Mofakhami,
• Grégoire de Loubens and
• José María De Teresa

Beilstein J. Nanotechnol. 2017, 8, 2106–2115, doi:10.3762/bjnano.8.210

• , we take advantage of them being attached at the end of very sensitive force sensors to perform cantilever magnetometry. The mechanical resonance frequency of the cantilever is monitored as a function of the applied magnetic field while it is positioned in a strong field gradient created by a

• (0.4 nA)/17.6 nm (1.6 nA), precursor temperature = 27 °C, chamber base pressure ≈1.2 × 10−6 mbar, chamber growth pressure ≈3.5 × 10−6 mbar. EDS experiments have been performed using a beam voltage of 5 kV. Cantilever magnetometry measurements were performed at room temperature using the setup described

• induction. d) Profile of the in-plane component of the magnetic induction vector as measured along the white arrow c), where the position reference is taken at the minimum of the magnetic induction. Cantilever magnetometry of a 500 nm diameter cobalt nanosphere. (a) Raw data of the cantilever frequency vs

Signal enhancement in cantilever magnetometry based on a co-resonantly coupled sensor

• Julia Körner,
• Christopher F. Reiche,
• Thomas Gemming,
• Bernd Büchner,
• Gerald Gerlach and
• Thomas Mühl

Beilstein J. Nanotechnol. 2016, 7, 1033–1043, doi:10.3762/bjnano.7.96

• für Festkörperelektronik, Technische Universität Dresden, 01062 Dresden, Germany 10.3762/bjnano.7.96 Abstract Cantilever magnetometry is a measurement technique used to study magnetic nanoparticles. With decreasing sample size, the signal strength is significantly reduced, requiring advances of the

• as nanocantilever and magnetic sample. Measurements revealed an enhancement of the commonly used frequency shift signal by five orders of magnitude compared to conventional cantilever magnetometry experiments with similar nanomagnets. With this experiment we do not only demonstrate the functionality

• of our sensor design but also its potential for very sensitive magnetometry measurements while maintaining a facile oscillation detection with a conventional microcantilever setup. Keywords: cantilever magnetometry; coupled oscillator; iron-filled carbon nanotube; magnetometry; signal enhancement