Determination of the nature of fluctuations using Li8 and Li9β-NMR and spin-lattice relaxation

Determination of the nature of fluctuations using Li8 and Li9β-NMR and spin-lattice relaxation We report a comparison of the 1/T1 spin-lattice relaxation rates for Li9 and Li8 in Pt and SrTiO3, in order to differentiate between magnetic and electric quadrupolar relaxation mechanisms. In Pt, the ratio of the 1/T1 spin relaxation rates RPt was found to be 6.82(29), which is close to but less than the theoretical limit of ∼7.68 for pure magnetic relaxation. In SrTiO3 this ratio was found to be 2.7(3), which is close to but larger than the theoretical limit of ∼2.14 expected for pure electric quadrupolar relaxation. These results bring insight into the nature of the fluctuations in the local environment of implanted Li8 observed by β-NMR. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Determination of the nature of fluctuations using Li8 and Li9β-NMR and spin-lattice relaxation

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Determination of the nature of fluctuations using Li8 and Li9β-NMR and spin-lattice relaxation

Abstract

We report a comparison of the 1/T1 spin-lattice relaxation rates for Li9 and Li8 in Pt and SrTiO3, in order to differentiate between magnetic and electric quadrupolar relaxation mechanisms. In Pt, the ratio of the 1/T1 spin relaxation rates RPt was found to be 6.82(29), which is close to but less than the theoretical limit of ∼7.68 for pure magnetic relaxation. In SrTiO3 this ratio was found to be 2.7(3), which is close to but larger than the theoretical limit of ∼2.14 expected for pure electric quadrupolar relaxation. These results bring insight into the nature of the fluctuations in the local environment of implanted Li8 observed by β-NMR.
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Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.96.014307
Publisher site
See Article on Publisher Site

Abstract

We report a comparison of the 1/T1 spin-lattice relaxation rates for Li9 and Li8 in Pt and SrTiO3, in order to differentiate between magnetic and electric quadrupolar relaxation mechanisms. In Pt, the ratio of the 1/T1 spin relaxation rates RPt was found to be 6.82(29), which is close to but less than the theoretical limit of ∼7.68 for pure magnetic relaxation. In SrTiO3 this ratio was found to be 2.7(3), which is close to but larger than the theoretical limit of ∼2.14 expected for pure electric quadrupolar relaxation. These results bring insight into the nature of the fluctuations in the local environment of implanted Li8 observed by β-NMR.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jul 31, 2017

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