Beta-NMR of Isolated Lithium in Nearly Ferromagnetic Palladium

Abstract

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.

4 pages, 3 figures

References in corpus (3)

• Near-Surface Structural Phase Transition of SrTiO${}_3$ Studied with Zero-Field $\beta$-Detected Nuclear Spin Relaxation and Resonance
• Local Defect in Metallic Quantum Critical Systems
• Magnetism, Critical Fluctuations and Susceptibility Renormalization in Pd

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