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Magnetic properties of individual Co2FeGa Heusler nanoparticles studied at room temperature by a highly sensitive co-resonant cantilever sensor

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dc.contributor.advisor Koerner, Julia
dc.contributor.author Koerner, Julia
dc.contributor.author Reiche, Christopher F
dc.contributor.author Ghunaim, Rasha
dc.contributor.author Fuge, Robert
dc.contributor.author Hampel, Silke
dc.contributor.author Buechner, Bernd
dc.contributor.author Muehl, Thomas
dc.date.accessioned 2019-10-22T10:08:29Z
dc.date.accessioned 2022-05-22T08:53:02Z
dc.date.available 2019-10-22T10:08:29Z
dc.date.available 2022-05-22T08:53:02Z
dc.date.issued 2017-08-21
dc.identifier.citation Scientific REPORTS | 7: 8881 | DOI:10.1038/s41598-017-08340-z en_US
dc.identifier.uri http://localhost:8080/xmlui/handle/123456789/8125
dc.description.abstract The investigation of properties of nanoparticles is an important task to pave the way for progress and new applications in many fields of research like biotechnology, medicine and magnetic storage techniques. The study of nanoparticles with ever decreasing size is a challenge for commonly employed methods and techniques. It requires increasingly complex measurement setups, often low temperatures and a size reduction of the respective sensors to achieve the necessary sensitivity and resolution. Here, we present results on how magnetic properties of individual nanoparticles can be measured at room temperature and with a conventional scanning force microscopy setup combined with a co-resonant cantilever magnetometry approach. We investigate individual Co2FeGa Heusler nanoparticles with diameters of the order of 35 nm encapsulated in carbon nanotubes. We observed, for the first time, magnetic switching of these nanoparticles in an external magnetic field by simple laser deflection detection. Furthermore, we were able to deduce magnetic properties of these nanoparticles which are in good agreement with previous results obtained with large nanoparticle ensembles in other experiments. In order to do this, we expand the analytical description of the frequency shift signal in cantilever magnetometry to a more general formulation, taking unaligned sensor oscillation directions with respect to the magnetic field into account. en_US
dc.description.sponsorship This work was funded by the DFG (Grant No. MU 1794/3-2). The publication of this article was funded by the Open Access Fund of the Leibniz Association. en_US
dc.language.iso en_US en_US
dc.publisher Scientific Reports en_US
dc.subject Research Subject Categories::NATURAL SCIENCES en_US
dc.title Magnetic properties of individual Co2FeGa Heusler nanoparticles studied at room temperature by a highly sensitive co-resonant cantilever sensor en_US
dc.type Article en_US

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