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Mössbauer study of197Au in Zn and Cd single crystals

Abstract

The 77.3 keV Mössbauer transition of197Au was used to study the hyperfine interactions and recoilfree fractions of dilute Au impurities in Zn and Cd single crystals at 4 K. Mössbauer sources were prepared by ion implantation of197mHg/197Hg at ambient temperature. From the quadrupole splittings the electric field gradients

$$\begin{gathered} eq(Au\underline {Cd} ) = + 11.7(6) \times 10^{17} v/cm^2 and \hfill \\ eq(Au\underline {Zn} ) = ( + )15.0(2.5) \times 10^{17} v/cm \hfill \\ \end{gathered} $$

were determined. The electric field gradients as well as the isomer shifts are in good agreement with the systematics of other impurity host systems. The recoilfree fractions agree with estimates using the mass corrected Debye temperatures of the host lattice.

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The authors thank Prof. G. Kaindl for his kind interest. This work was supported in part by the Sonderforschungsbereich 161 of the Deutsche Forschungsgemeinschaft.

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Perscheid, B., Haas, H. Mössbauer study of197Au in Zn and Cd single crystals. Hyperfine Interact 15, 227–232 (1983). https://doi.org/10.1007/BF02159744

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Keywords

  • Thin Film
  • Ambient Temperature
  • Field Gradient
  • Isomer Shift
  • Hyperfine Interaction