beta-NMR of Palladium foil
Beta-detected NMR (beta-NMR) of low-energy implanted Li-8(+) was studied in metallic palladium. The resonance was found to have a large negative shift with respect to the reference signal in the cubic insulator MgO. This shift exhibited significant temperature dependence on cooling below room temper...
| Main Authors: | , , , , , , , , , , |
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| Format: | Conference item |
| Published: |
2006
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| _version_ | 1797064107919147008 |
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| author | Parolin, T Salman, Z Chakhalian, J Wang, D Keeler, T Hossain, M Kiefl, R Chow, K Morris, G Miller, R MacFarlane, W |
| author_facet | Parolin, T Salman, Z Chakhalian, J Wang, D Keeler, T Hossain, M Kiefl, R Chow, K Morris, G Miller, R MacFarlane, W |
| author_sort | Parolin, T |
| collection | OXFORD |
| description | Beta-detected NMR (beta-NMR) of low-energy implanted Li-8(+) was studied in metallic palladium. The resonance was found to have a large negative shift with respect to the reference signal in the cubic insulator MgO. This shift exhibited significant temperature dependence on cooling below room temperature, approximately proportionate to the temperature-dependent spin susceptibility of pure Pd. Thus it is tentatively attributed to a Knight shift (K) caused by a large negative hyperfine coupling; a phenomenon common in transition metal ions, but not in alkalis. However, the spin-lattice relaxation of Li-8 is much slower than expected from the Korringa law for such a large K. We compare results from samples of very different thicknesses: 12.5 mu m foil and a 100 nm thin film. (c) 2005 Elsevier B.V. All rights reserved. |
| first_indexed | 2024-03-06T21:09:30Z |
| format | Conference item |
| id | oxford-uuid:3da5f233-33b3-465f-8f19-f8ed7adb9a79 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T21:09:30Z |
| publishDate | 2006 |
| record_format | dspace |
| spelling | oxford-uuid:3da5f233-33b3-465f-8f19-f8ed7adb9a792022-03-26T14:20:44Zbeta-NMR of Palladium foilConference itemhttp://purl.org/coar/resource_type/c_5794uuid:3da5f233-33b3-465f-8f19-f8ed7adb9a79Symplectic Elements at Oxford2006Parolin, TSalman, ZChakhalian, JWang, DKeeler, THossain, MKiefl, RChow, KMorris, GMiller, RMacFarlane, WBeta-detected NMR (beta-NMR) of low-energy implanted Li-8(+) was studied in metallic palladium. The resonance was found to have a large negative shift with respect to the reference signal in the cubic insulator MgO. This shift exhibited significant temperature dependence on cooling below room temperature, approximately proportionate to the temperature-dependent spin susceptibility of pure Pd. Thus it is tentatively attributed to a Knight shift (K) caused by a large negative hyperfine coupling; a phenomenon common in transition metal ions, but not in alkalis. However, the spin-lattice relaxation of Li-8 is much slower than expected from the Korringa law for such a large K. We compare results from samples of very different thicknesses: 12.5 mu m foil and a 100 nm thin film. (c) 2005 Elsevier B.V. All rights reserved. |
| spellingShingle | Parolin, T Salman, Z Chakhalian, J Wang, D Keeler, T Hossain, M Kiefl, R Chow, K Morris, G Miller, R MacFarlane, W beta-NMR of Palladium foil |
| title | beta-NMR of Palladium foil |
| title_full | beta-NMR of Palladium foil |
| title_fullStr | beta-NMR of Palladium foil |
| title_full_unstemmed | beta-NMR of Palladium foil |
| title_short | beta-NMR of Palladium foil |
| title_sort | beta nmr of palladium foil |
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