Use of nuclear spin noise spectroscopy to monitor slow magnetization buildup at millikelvin temperatures
At ultralow temperatures, longitudinal nuclear magnetic relaxation times become exceedingly long and spectral lines are very broad. These facts pose particular challenges for the measurement of NMR spectra and spin relaxation phenomena. Nuclear spin noise spectroscopy is used to monitor proton spin...
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| Format: | Article |
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Wiley
2016
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| Online Access: | https://eprints.nottingham.ac.uk/39472/ |
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| author | Pöschko, Maria Theresia Peat, David Owers-Bradley, John Müller, Norbert |
| author_facet | Pöschko, Maria Theresia Peat, David Owers-Bradley, John Müller, Norbert |
| author_sort | Pöschko, Maria Theresia |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | At ultralow temperatures, longitudinal nuclear magnetic relaxation times become exceedingly long and spectral lines are very broad. These facts pose particular challenges for the measurement of NMR spectra and spin relaxation phenomena. Nuclear spin noise spectroscopy is used to monitor proton spin polarization buildup to thermal equilibrium of a mixture of glycerol, water, and copper oxide nanoparticles at 17.5 mK in a static magnetic field of 2.5 T. Relaxation times determined in such a way are essentially free from perturbations caused by excitation radiofrequency pulses, radiation damping, and insufficient excitation bandwidth. The experimental spin-lattice relaxation times determined on resonance by saturation recovery with spin noise detection are consistently longer than those determined by using pulse excitation. These longer values are in better accordance with the expected field dependence trend than those obtained by on-resonance experiments with pulsed excitation. |
| first_indexed | 2025-11-14T19:38:33Z |
| format | Article |
| id | nottingham-39472 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:38:33Z |
| publishDate | 2016 |
| publisher | Wiley |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-394722020-05-04T18:17:57Z https://eprints.nottingham.ac.uk/39472/ Use of nuclear spin noise spectroscopy to monitor slow magnetization buildup at millikelvin temperatures Pöschko, Maria Theresia Peat, David Owers-Bradley, John Müller, Norbert At ultralow temperatures, longitudinal nuclear magnetic relaxation times become exceedingly long and spectral lines are very broad. These facts pose particular challenges for the measurement of NMR spectra and spin relaxation phenomena. Nuclear spin noise spectroscopy is used to monitor proton spin polarization buildup to thermal equilibrium of a mixture of glycerol, water, and copper oxide nanoparticles at 17.5 mK in a static magnetic field of 2.5 T. Relaxation times determined in such a way are essentially free from perturbations caused by excitation radiofrequency pulses, radiation damping, and insufficient excitation bandwidth. The experimental spin-lattice relaxation times determined on resonance by saturation recovery with spin noise detection are consistently longer than those determined by using pulse excitation. These longer values are in better accordance with the expected field dependence trend than those obtained by on-resonance experiments with pulsed excitation. Wiley 2016-10-05 Article PeerReviewed Pöschko, Maria Theresia, Peat, David, Owers-Bradley, John and Müller, Norbert (2016) Use of nuclear spin noise spectroscopy to monitor slow magnetization buildup at millikelvin temperatures. ChemPhysChem, 17 (19). pp. 3035-3039. ISSN 1439-4235 magnetic properties nanoparticles NMR spectroscopy radiation damping spin relaxation http://onlinelibrary.wiley.com/doi/10.1002/cphc.201600323/abstract doi:10.1002/cphc.201600323 doi:10.1002/cphc.201600323 |
| spellingShingle | magnetic properties nanoparticles NMR spectroscopy radiation damping spin relaxation Pöschko, Maria Theresia Peat, David Owers-Bradley, John Müller, Norbert Use of nuclear spin noise spectroscopy to monitor slow magnetization buildup at millikelvin temperatures |
| title | Use of nuclear spin noise spectroscopy to monitor slow magnetization buildup at millikelvin temperatures |
| title_full | Use of nuclear spin noise spectroscopy to monitor slow magnetization buildup at millikelvin temperatures |
| title_fullStr | Use of nuclear spin noise spectroscopy to monitor slow magnetization buildup at millikelvin temperatures |
| title_full_unstemmed | Use of nuclear spin noise spectroscopy to monitor slow magnetization buildup at millikelvin temperatures |
| title_short | Use of nuclear spin noise spectroscopy to monitor slow magnetization buildup at millikelvin temperatures |
| title_sort | use of nuclear spin noise spectroscopy to monitor slow magnetization buildup at millikelvin temperatures |
| topic | magnetic properties nanoparticles NMR spectroscopy radiation damping spin relaxation |
| url | https://eprints.nottingham.ac.uk/39472/ https://eprints.nottingham.ac.uk/39472/ https://eprints.nottingham.ac.uk/39472/ |