Beta-NMR of Isolated Lithium in Nearly Ferromagnetic Palladium

Details Beta-NMR of Isolated Lithium in Nearly Ferromagnetic Palladium Beta-NMR of Isolated Lithium in Nearly Ferromagnetic Palladium

2007-01-17

arxiv.org/abs/cond-mat/0701394v1

Phys. Rev. Lett. 98, 047601 (2007)

Physics

Condensed Matter

Materials Science

4 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.98.047601

The temperature dependence of the frequency shift and spin-lattice relaxation rate of isolated, nonmagnetic Li-8 impurities implanted in a nearly ferromagnetic host (Pd) are measured by means of beta-detected nuclear magnetic resonance (b-NMR). The shift is negative, very large and increases monotonically with decreasing T in proportion to the bulk susceptibility of Pd for T > T*~ 100 K. Below T*, an additional shift occurs which we attribute to the response of Pd to the defect. The relaxation rate is much slower than expected for the large shift and is linear with T below T*, showing no sign of additional relaxation mechanisms associated with the defect.

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