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Nqr experiments on Sc-Y alloys at very low temperatures

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Abstract

We have performed Nuclear Quadrupole Resonance (NQR) experiments on an alloy of scandium and yttrium. We find that the characteristic resonance frequencies in zero external field are 50 percent larger than in pure scandium. This increase in frequency makes the Sc-Y alloy a better candidate for absolute thermometry below 500 µK. However, the spin-lattice relaxation time of this alloy is more than an order of magnitude longer than in the pure scandium. In addition, we have observed an abrupt increase in the Korringa constant for temperatures below 5mK.

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Authors and Affiliations

  1. Cornell Microkelvin Laboratory Materials Science Center, Cornell University, 14853, Ithaca, New York

    L. Pollack, E. N. Smith & R. C. Richardson

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  1. L. Pollack
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  2. E. N. Smith
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  3. R. C. Richardson
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Pollack, L., Smith, E.N. & Richardson, R.C. Nqr experiments on Sc-Y alloys at very low temperatures. J Low Temp Phys 89, 169–175 (1992). https://doi.org/10.1007/BF00692589

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