MEASUREMENT OF LOCAL-MOMENT-INDUCED ELECTRIC-FIELD GRADIENT AT DILUTE GOLD IMPURITIES IN IRON BY SINGLE-PASSAGE NMR ON ORIENTED NUCLEI
The effect of small quadrupole interactions on single-passage nuclear magnetic resonance of oriented nuclei is reported both in theory and experiment. In contrast to the purely magnetic (Zeeman) case, the quadrupole interaction P gives rise to a sweep-direction dependence of the resonance signal. Th...
| Main Authors: | , , , |
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| Format: | Journal article |
| Language: | English |
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1975
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| _version_ | 1826275915062050816 |
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| author | Callaghan, P Johnston, P Lattimer, W Stone, N |
| author_facet | Callaghan, P Johnston, P Lattimer, W Stone, N |
| author_sort | Callaghan, P |
| collection | OXFORD |
| description | The effect of small quadrupole interactions on single-passage nuclear magnetic resonance of oriented nuclei is reported both in theory and experiment. In contrast to the purely magnetic (Zeeman) case, the quadrupole interaction P gives rise to a sweep-direction dependence of the resonance signal. This yields the sign of P and subsequent time development gives the nuclear-spin-lattice relaxation time. The magnitude of P can be obtained from the signal during passage even in the presence of inhomogeneous broadening Γ2IP. The technique is applied to Au198 nuclei in cubic ferromagnetic Fe and P=0.21±0.02 MHz is obtained. The quadrupole interaction is the result of spin-orbit coupling at the spin-polarized Au ion breaking the cubic-lattice symmetry. The Korringa constant CK for relaxation of the Au198 nuclei is measured as 1.2 K sec. © 1975 The American Physical Society. |
| first_indexed | 2024-03-06T23:06:04Z |
| format | Journal article |
| id | oxford-uuid:63d86593-ede0-46ce-ad7a-eddc39a707a6 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:06:04Z |
| publishDate | 1975 |
| record_format | dspace |
| spelling | oxford-uuid:63d86593-ede0-46ce-ad7a-eddc39a707a62022-03-26T18:15:24ZMEASUREMENT OF LOCAL-MOMENT-INDUCED ELECTRIC-FIELD GRADIENT AT DILUTE GOLD IMPURITIES IN IRON BY SINGLE-PASSAGE NMR ON ORIENTED NUCLEIJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:63d86593-ede0-46ce-ad7a-eddc39a707a6EnglishSymplectic Elements at Oxford1975Callaghan, PJohnston, PLattimer, WStone, NThe effect of small quadrupole interactions on single-passage nuclear magnetic resonance of oriented nuclei is reported both in theory and experiment. In contrast to the purely magnetic (Zeeman) case, the quadrupole interaction P gives rise to a sweep-direction dependence of the resonance signal. This yields the sign of P and subsequent time development gives the nuclear-spin-lattice relaxation time. The magnitude of P can be obtained from the signal during passage even in the presence of inhomogeneous broadening Γ2IP. The technique is applied to Au198 nuclei in cubic ferromagnetic Fe and P=0.21±0.02 MHz is obtained. The quadrupole interaction is the result of spin-orbit coupling at the spin-polarized Au ion breaking the cubic-lattice symmetry. The Korringa constant CK for relaxation of the Au198 nuclei is measured as 1.2 K sec. © 1975 The American Physical Society. |
| spellingShingle | Callaghan, P Johnston, P Lattimer, W Stone, N MEASUREMENT OF LOCAL-MOMENT-INDUCED ELECTRIC-FIELD GRADIENT AT DILUTE GOLD IMPURITIES IN IRON BY SINGLE-PASSAGE NMR ON ORIENTED NUCLEI |
| title | MEASUREMENT OF LOCAL-MOMENT-INDUCED ELECTRIC-FIELD GRADIENT AT DILUTE GOLD IMPURITIES IN IRON BY SINGLE-PASSAGE NMR ON ORIENTED NUCLEI |
| title_full | MEASUREMENT OF LOCAL-MOMENT-INDUCED ELECTRIC-FIELD GRADIENT AT DILUTE GOLD IMPURITIES IN IRON BY SINGLE-PASSAGE NMR ON ORIENTED NUCLEI |
| title_fullStr | MEASUREMENT OF LOCAL-MOMENT-INDUCED ELECTRIC-FIELD GRADIENT AT DILUTE GOLD IMPURITIES IN IRON BY SINGLE-PASSAGE NMR ON ORIENTED NUCLEI |
| title_full_unstemmed | MEASUREMENT OF LOCAL-MOMENT-INDUCED ELECTRIC-FIELD GRADIENT AT DILUTE GOLD IMPURITIES IN IRON BY SINGLE-PASSAGE NMR ON ORIENTED NUCLEI |
| title_short | MEASUREMENT OF LOCAL-MOMENT-INDUCED ELECTRIC-FIELD GRADIENT AT DILUTE GOLD IMPURITIES IN IRON BY SINGLE-PASSAGE NMR ON ORIENTED NUCLEI |
| title_sort | measurement of local moment induced electric field gradient at dilute gold impurities in iron by single passage nmr on oriented nuclei |
| work_keys_str_mv | AT callaghanp measurementoflocalmomentinducedelectricfieldgradientatdilutegoldimpuritiesinironbysinglepassagenmronorientednuclei AT johnstonp measurementoflocalmomentinducedelectricfieldgradientatdilutegoldimpuritiesinironbysinglepassagenmronorientednuclei AT lattimerw measurementoflocalmomentinducedelectricfieldgradientatdilutegoldimpuritiesinironbysinglepassagenmronorientednuclei AT stonen measurementoflocalmomentinducedelectricfieldgradientatdilutegoldimpuritiesinironbysinglepassagenmronorientednuclei |