Magnetic properties of individual Co2FeGa Heusler nanoparticles studied at room temperature by a highly sensitive co-resonant cantilever sensor
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 e...
| Main Authors: | , , , , , , |
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| פורמט: | Article |
| שפה: | English |
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Nature Portfolio
2017-08-01
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| סדרה: | Scientific Reports |
| גישה מקוונת: | https://doi.org/10.1038/s41598-017-08340-z |
| _version_ | 1830286594794323968 |
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| author | Julia Körner Christopher F. Reiche Rasha Ghunaim Robert Fuge Silke Hampel Bernd Büchner Thomas Mühl |
| author_facet | Julia Körner Christopher F. Reiche Rasha Ghunaim Robert Fuge Silke Hampel Bernd Büchner Thomas Mühl |
| author_sort | Julia Körner |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-19T04:01:17Z |
| format | Article |
| id | doaj.art-709c7456245e4a8eb1b4b3d2290f6eb0 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-19T04:01:17Z |
| publishDate | 2017-08-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-709c7456245e4a8eb1b4b3d2290f6eb02022-12-21T20:36:40ZengNature PortfolioScientific Reports2045-23222017-08-017111210.1038/s41598-017-08340-zMagnetic properties of individual Co2FeGa Heusler nanoparticles studied at room temperature by a highly sensitive co-resonant cantilever sensorJulia Körner0Christopher F. Reiche1Rasha Ghunaim2Robert Fuge3Silke Hampel4Bernd Büchner5Thomas Mühl6Leibniz Institute for Solid State and Materials Research IFW DresdenLeibniz Institute for Solid State and Materials Research IFW DresdenLeibniz Institute for Solid State and Materials Research IFW DresdenLeibniz Institute for Solid State and Materials Research IFW DresdenLeibniz Institute for Solid State and Materials Research IFW DresdenLeibniz Institute for Solid State and Materials Research IFW DresdenLeibniz Institute for Solid State and Materials Research IFW DresdenAbstract 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.https://doi.org/10.1038/s41598-017-08340-z |
| spellingShingle | Julia Körner Christopher F. Reiche Rasha Ghunaim Robert Fuge Silke Hampel Bernd Büchner Thomas Mühl Magnetic properties of individual Co2FeGa Heusler nanoparticles studied at room temperature by a highly sensitive co-resonant cantilever sensor Scientific Reports |
| title | Magnetic properties of individual Co2FeGa Heusler nanoparticles studied at room temperature by a highly sensitive co-resonant cantilever sensor |
| title_full | Magnetic properties of individual Co2FeGa Heusler nanoparticles studied at room temperature by a highly sensitive co-resonant cantilever sensor |
| title_fullStr | Magnetic properties of individual Co2FeGa Heusler nanoparticles studied at room temperature by a highly sensitive co-resonant cantilever sensor |
| title_full_unstemmed | Magnetic properties of individual Co2FeGa Heusler nanoparticles studied at room temperature by a highly sensitive co-resonant cantilever sensor |
| title_short | Magnetic properties of individual Co2FeGa Heusler nanoparticles studied at room temperature by a highly sensitive co-resonant cantilever sensor |
| title_sort | magnetic properties of individual co2fega heusler nanoparticles studied at room temperature by a highly sensitive co resonant cantilever sensor |
| url | https://doi.org/10.1038/s41598-017-08340-z |
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