Spin fluctuations in Al3V: An NMR study

Chin-Shan Lue and Joseph H. Ross, Jr.
Phys. Rev. B 60, 8533 – Published 15 September 1999
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Abstract

We report the results of a nuclear magnetic resonance (NMR) study of Al3V at temperatures between 4 and 300 K. 51V and 27Al Knight shifts exhibit a Curie-Weiss behavior corresponding to an effective moment Peff0.32μB per V, indicating intrinsic weak magnetism localized in vanadium orbitals. The T1 exhibits a T dependence at higher temperatures, indicative of nearly antiferromagnetic behavior of itinerant electrons. We have fit the observed behavior within the self-consistent renormalized model for itinerant magnetism, which provides good agreement with the measurements. At about 80 K, the Knight shifts and spin-lattice relaxation rates exhibit a crossover from Curie-Weiss magnetism to Korringa behavior. Comparing previously reported specific heat and transport results with our NMR results, we find that the Wilson ratio and Kadowaki-Woods relation are close to those observed for highly correlated electron compounds, despite the relatively small enhancement of γ and χ.

  • Received 10 August 1998

DOI:https://doi.org/10.1103/PhysRevB.60.8533

©1999 American Physical Society

Authors & Affiliations

Chin-Shan Lue* and Joseph H. Ross, Jr.

  • Department of Physics, Texas A&M University, College Station, Texas 77843-4242

  • *Electronic address: c0l9877@unix.tamu.edu
  • Electronic address: jhross@tamu.edu

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Vol. 60, Iss. 12 — 15 September 1999

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