Radiation-Induced Paramagnetic Centers in Meso- and Macroporous Synthetic Opals from EPR and ENDOR Data
The paramagnetic defects and radiation-induced paramagnetic centers (PCs) in silica opals can play a crucial role in determining the magnetic and electronic behavior of materials and serve as local probes of their electronic structure. Systematic investigations of paramagnetic defects are essential...
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MDPI AG
2024-10-01
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| author | Alexander Rodionov Larisa Latypova Georgy Mamin Marat Gafurov |
| author_facet | Alexander Rodionov Larisa Latypova Georgy Mamin Marat Gafurov |
| author_sort | Alexander Rodionov |
| collection | DOAJ |
| description | The paramagnetic defects and radiation-induced paramagnetic centers (PCs) in silica opals can play a crucial role in determining the magnetic and electronic behavior of materials and serve as local probes of their electronic structure. Systematic investigations of paramagnetic defects are essential for advancing both theoretical and practical aspects of material science. A series of silica opal samples with different geometrical parameters were synthesized and radiation-induced PCs were investigated by means of the conventional and pulsed X- and W-band electron paramagnetic resonance, and <sup>1</sup>H/<sup>2</sup>H Mims electron-nuclear double resonance. Two groups of PCs were distinguished based on their spectroscopic parameters, electron relaxation characteristics, temperature and time stability, localization relative to the surface of silica spheres, and their origin. The obtained data demonstrate that stable radiation-induced E’ PCs can be used as sensitive probes for the hydrogen-containing fillers of the opal pores, for the development of compact radiation monitoring equipment, and for quantum technologies. |
| format | Article |
| id | doaj-art-af34b48fb1494700aab9c9d6dd57589d |
| institution | DOAJ |
| issn | 2312-7481 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | MDPI AG |
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| series | Magnetochemistry |
| spelling | doaj-art-af34b48fb1494700aab9c9d6dd57589d2025-08-20T02:47:59ZengMDPI AGMagnetochemistry2312-74812024-10-0110118410.3390/magnetochemistry10110084Radiation-Induced Paramagnetic Centers in Meso- and Macroporous Synthetic Opals from EPR and ENDOR DataAlexander Rodionov0Larisa Latypova1Georgy Mamin2Marat Gafurov3Institute of Physics, Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, RussiaSchool of Chemistry and Chemical Engineering, Harbin Institute of Technology, 92 West Da-Zhi Street, Harbin 150001, ChinaInstitute of Physics, Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, RussiaInstitute of Physics, Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, RussiaThe paramagnetic defects and radiation-induced paramagnetic centers (PCs) in silica opals can play a crucial role in determining the magnetic and electronic behavior of materials and serve as local probes of their electronic structure. Systematic investigations of paramagnetic defects are essential for advancing both theoretical and practical aspects of material science. A series of silica opal samples with different geometrical parameters were synthesized and radiation-induced PCs were investigated by means of the conventional and pulsed X- and W-band electron paramagnetic resonance, and <sup>1</sup>H/<sup>2</sup>H Mims electron-nuclear double resonance. Two groups of PCs were distinguished based on their spectroscopic parameters, electron relaxation characteristics, temperature and time stability, localization relative to the surface of silica spheres, and their origin. The obtained data demonstrate that stable radiation-induced E’ PCs can be used as sensitive probes for the hydrogen-containing fillers of the opal pores, for the development of compact radiation monitoring equipment, and for quantum technologies.https://www.mdpi.com/2312-7481/10/11/84opalporesparamagnetic centersEPRENDOR |
| spellingShingle | Alexander Rodionov Larisa Latypova Georgy Mamin Marat Gafurov Radiation-Induced Paramagnetic Centers in Meso- and Macroporous Synthetic Opals from EPR and ENDOR Data Magnetochemistry opal pores paramagnetic centers EPR ENDOR |
| title | Radiation-Induced Paramagnetic Centers in Meso- and Macroporous Synthetic Opals from EPR and ENDOR Data |
| title_full | Radiation-Induced Paramagnetic Centers in Meso- and Macroporous Synthetic Opals from EPR and ENDOR Data |
| title_fullStr | Radiation-Induced Paramagnetic Centers in Meso- and Macroporous Synthetic Opals from EPR and ENDOR Data |
| title_full_unstemmed | Radiation-Induced Paramagnetic Centers in Meso- and Macroporous Synthetic Opals from EPR and ENDOR Data |
| title_short | Radiation-Induced Paramagnetic Centers in Meso- and Macroporous Synthetic Opals from EPR and ENDOR Data |
| title_sort | radiation induced paramagnetic centers in meso and macroporous synthetic opals from epr and endor data |
| topic | opal pores paramagnetic centers EPR ENDOR |
| url | https://www.mdpi.com/2312-7481/10/11/84 |
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