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The electric field gradient of111Cd in an α-Al2O3 single crystal

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Abstract

Radioactive111In+ ions were implanted into an α-Al2O3 single crystal. The hyperfine parameters of111Cd at substitutional Al lattice sites were identified by measuring the perturbed angular correlation for different sample orientations. The electric field gradientV zz =1.04(17)·1022V/m2 was obtained from the quadrupole coupling constant. This result is compared with the efg values of27Al in α-alumina and111Cd in α-Fe2O3, which also has the corundum structure. Two additional fractions with broad frequency distributions were observed, one of which is attributed to111Cd atoms in a strongly distorted Al2O3-lattice.

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Authors and Affiliations

  1. II. Physikalisches Institut, Universität Göttingen, D-3400, Göttingen, FRG

    J. Kesten

  2. Sonderforschungsbereich 126, Göttingen/Clausthal, D-3400, Göttingen, FRG

    J. Kesten

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  1. J. Kesten
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Kesten, J. The electric field gradient of111Cd in an α-Al2O3 single crystal. Hyperfine Interact 52, 17–27 (1989). https://doi.org/10.1007/BF02609560

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  • DOI: https://doi.org/10.1007/BF02609560

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