Magnetic noise detection and imaging from a superparamagnetic core-shell particle via an ensemble of nitrogen-vacancy centers in a thin diamond chip
We describe a local fluctuating magnetic field detection of Fe _3 O _4 superparamagnetic core–shell particles via relaxometry of an ensemble of NV centers in a diamond. A thin diamond chip enables optical access to the contact position of the magnetic particle through the backside. A significant dro...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | Applied Physics Express |
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| Online Access: | https://doi.org/10.35848/1882-0786/adac28 |
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| author | Thitinun Gas-osoth Kunitaka Hayashi Dwi Prananto Toshu An |
| author_facet | Thitinun Gas-osoth Kunitaka Hayashi Dwi Prananto Toshu An |
| author_sort | Thitinun Gas-osoth |
| collection | DOAJ |
| description | We describe a local fluctuating magnetic field detection of Fe _3 O _4 superparamagnetic core–shell particles via relaxometry of an ensemble of NV centers in a diamond. A thin diamond chip enables optical access to the contact position of the magnetic particle through the backside. A significant drop in NV relaxation time near the particle was observed and was evaluated using a model incorporating ensemble NVs and magnetic particles. Additionally, the local magnetization curve (B-H curve) was measured by analyzing ODMR frequency splitting under external magnetic fields aligned with an NV axis. This study expands the NV sensing to applications involving collective superparamagnetic particles. |
| format | Article |
| id | doaj-art-371139577e8c49e6963f3113480654a3 |
| institution | Kabale University |
| issn | 1882-0786 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Applied Physics Express |
| spelling | doaj-art-371139577e8c49e6963f3113480654a32025-02-06T15:46:50ZengIOP PublishingApplied Physics Express1882-07862025-01-0118202500210.35848/1882-0786/adac28Magnetic noise detection and imaging from a superparamagnetic core-shell particle via an ensemble of nitrogen-vacancy centers in a thin diamond chipThitinun Gas-osoth0https://orcid.org/0009-0004-2202-6364Kunitaka Hayashi1Dwi Prananto2https://orcid.org/0000-0001-7206-2532Toshu An3https://orcid.org/0000-0001-7936-7101School of Materials Science, Japan Advanced Institute of Science and Technology , Nomi, Ishikawa 923-1292, JapanSchool of Materials Science, Japan Advanced Institute of Science and Technology , Nomi, Ishikawa 923-1292, JapanSchool of Materials Science, Japan Advanced Institute of Science and Technology , Nomi, Ishikawa 923-1292, JapanSchool of Materials Science, Japan Advanced Institute of Science and Technology , Nomi, Ishikawa 923-1292, JapanWe describe a local fluctuating magnetic field detection of Fe _3 O _4 superparamagnetic core–shell particles via relaxometry of an ensemble of NV centers in a diamond. A thin diamond chip enables optical access to the contact position of the magnetic particle through the backside. A significant drop in NV relaxation time near the particle was observed and was evaluated using a model incorporating ensemble NVs and magnetic particles. Additionally, the local magnetization curve (B-H curve) was measured by analyzing ODMR frequency splitting under external magnetic fields aligned with an NV axis. This study expands the NV sensing to applications involving collective superparamagnetic particles.https://doi.org/10.35848/1882-0786/adac28relaxation timesuperparamagneticmagnetic fluctuationNV centermagnetometryquantum sensing |
| spellingShingle | Thitinun Gas-osoth Kunitaka Hayashi Dwi Prananto Toshu An Magnetic noise detection and imaging from a superparamagnetic core-shell particle via an ensemble of nitrogen-vacancy centers in a thin diamond chip Applied Physics Express relaxation time superparamagnetic magnetic fluctuation NV center magnetometry quantum sensing |
| title | Magnetic noise detection and imaging from a superparamagnetic core-shell particle via an ensemble of nitrogen-vacancy centers in a thin diamond chip |
| title_full | Magnetic noise detection and imaging from a superparamagnetic core-shell particle via an ensemble of nitrogen-vacancy centers in a thin diamond chip |
| title_fullStr | Magnetic noise detection and imaging from a superparamagnetic core-shell particle via an ensemble of nitrogen-vacancy centers in a thin diamond chip |
| title_full_unstemmed | Magnetic noise detection and imaging from a superparamagnetic core-shell particle via an ensemble of nitrogen-vacancy centers in a thin diamond chip |
| title_short | Magnetic noise detection and imaging from a superparamagnetic core-shell particle via an ensemble of nitrogen-vacancy centers in a thin diamond chip |
| title_sort | magnetic noise detection and imaging from a superparamagnetic core shell particle via an ensemble of nitrogen vacancy centers in a thin diamond chip |
| topic | relaxation time superparamagnetic magnetic fluctuation NV center magnetometry quantum sensing |
| url | https://doi.org/10.35848/1882-0786/adac28 |
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