Nanometers-Thick Ferromagnetic Surface Produced by Laser Cutting of Diamond
In this work, we demonstrate that cutting diamond crystals with a laser (532 nm wavelength, 0.5 mJ energy, 200 ns pulse duration at 15 kHz) produced a ≲20 nm thick surface layer with magnetic order at room temperature. We measured the magnetic moment of five natural and six CVD diamond crystals of d...
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| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/3/1014 |
| _version_ | 1797486612138950656 |
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| author | Annette Setzer Pablo D. Esquinazi Sergei Buga Milena T. Georgieva Tilo Reinert Tom Venus Irina Estrela-Lopis Andrei Ivashenko Maria Bondarenko Winfried Böhlmann Jan Meijer |
| author_facet | Annette Setzer Pablo D. Esquinazi Sergei Buga Milena T. Georgieva Tilo Reinert Tom Venus Irina Estrela-Lopis Andrei Ivashenko Maria Bondarenko Winfried Böhlmann Jan Meijer |
| author_sort | Annette Setzer |
| collection | DOAJ |
| description | In this work, we demonstrate that cutting diamond crystals with a laser (532 nm wavelength, 0.5 mJ energy, 200 ns pulse duration at 15 kHz) produced a ≲20 nm thick surface layer with magnetic order at room temperature. We measured the magnetic moment of five natural and six CVD diamond crystals of different sizes, nitrogen contents and surface orientations with a SQUID magnetometer. A robust ferromagnetic response at 300 K was observed only for crystals that were cut with the laser along the (100) surface orientation. The magnetic signals were much weaker for the (110) and negligible for the (111) orientations. We attribute the magnetic order to the disordered graphite layer produced by the laser at the diamond surface. The ferromagnetic signal vanished after chemical etching or after moderate temperature annealing. The obtained results indicate that laser treatment of diamond may pave the way to create ferromagnetic spots at its surface. |
| first_indexed | 2024-03-09T23:35:43Z |
| format | Article |
| id | doaj.art-162a467bd973486098880cc8c3ee4156 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T23:35:43Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-162a467bd973486098880cc8c3ee41562023-11-23T17:00:51ZengMDPI AGMaterials1996-19442022-01-01153101410.3390/ma15031014Nanometers-Thick Ferromagnetic Surface Produced by Laser Cutting of DiamondAnnette Setzer0Pablo D. Esquinazi1Sergei Buga2Milena T. Georgieva3Tilo Reinert4Tom Venus5Irina Estrela-Lopis6Andrei Ivashenko7Maria Bondarenko8Winfried Böhlmann9Jan Meijer10Division of Superconductivity and Magnetism, Felix-Bloch-Institute for Solid State Physics, University of Leipzig, 04103 Leipzig, GermanyDivision of Superconductivity and Magnetism, Felix-Bloch-Institute for Solid State Physics, University of Leipzig, 04103 Leipzig, GermanyTechnological Institute for Superhard and Novel Carbon Materials, 7a Centralnaya Street, 108840 Moscow, RussiaDivision of Superconductivity and Magnetism, Felix-Bloch-Institute for Solid State Physics, University of Leipzig, 04103 Leipzig, GermanyDivision of Applied Quantum Systems, Felix-Bloch-Institute for Solid State Physics, University of Leipzig, 04103 Leipzig, GermanyInstitute of Medical Physics and Biophysics, University of Leipzig, 04107 Leipzig, GermanyInstitute of Medical Physics and Biophysics, University of Leipzig, 04107 Leipzig, GermanyTechnological Institute for Superhard and Novel Carbon Materials, 7a Centralnaya Street, 108840 Moscow, RussiaTechnological Institute for Superhard and Novel Carbon Materials, 7a Centralnaya Street, 108840 Moscow, RussiaDivision of Superconductivity and Magnetism, Felix-Bloch-Institute for Solid State Physics, University of Leipzig, 04103 Leipzig, GermanyDivision of Applied Quantum Systems, Felix-Bloch-Institute for Solid State Physics, University of Leipzig, 04103 Leipzig, GermanyIn this work, we demonstrate that cutting diamond crystals with a laser (532 nm wavelength, 0.5 mJ energy, 200 ns pulse duration at 15 kHz) produced a ≲20 nm thick surface layer with magnetic order at room temperature. We measured the magnetic moment of five natural and six CVD diamond crystals of different sizes, nitrogen contents and surface orientations with a SQUID magnetometer. A robust ferromagnetic response at 300 K was observed only for crystals that were cut with the laser along the (100) surface orientation. The magnetic signals were much weaker for the (110) and negligible for the (111) orientations. We attribute the magnetic order to the disordered graphite layer produced by the laser at the diamond surface. The ferromagnetic signal vanished after chemical etching or after moderate temperature annealing. The obtained results indicate that laser treatment of diamond may pave the way to create ferromagnetic spots at its surface.https://www.mdpi.com/1996-1944/15/3/1014diamondmagnetic orderlaser treatment |
| spellingShingle | Annette Setzer Pablo D. Esquinazi Sergei Buga Milena T. Georgieva Tilo Reinert Tom Venus Irina Estrela-Lopis Andrei Ivashenko Maria Bondarenko Winfried Böhlmann Jan Meijer Nanometers-Thick Ferromagnetic Surface Produced by Laser Cutting of Diamond Materials diamond magnetic order laser treatment |
| title | Nanometers-Thick Ferromagnetic Surface Produced by Laser Cutting of Diamond |
| title_full | Nanometers-Thick Ferromagnetic Surface Produced by Laser Cutting of Diamond |
| title_fullStr | Nanometers-Thick Ferromagnetic Surface Produced by Laser Cutting of Diamond |
| title_full_unstemmed | Nanometers-Thick Ferromagnetic Surface Produced by Laser Cutting of Diamond |
| title_short | Nanometers-Thick Ferromagnetic Surface Produced by Laser Cutting of Diamond |
| title_sort | nanometers thick ferromagnetic surface produced by laser cutting of diamond |
| topic | diamond magnetic order laser treatment |
| url | https://www.mdpi.com/1996-1944/15/3/1014 |
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