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The Electric Field Gradients in (Zr/Hf)Al3 and (Zr/Hf)2Al3 Intermetallic Compounds Studied by 181Ta- and 111Cd-PAC Spectroscopy

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Abstract

The electric quadrupole hyperfine interactions for 181Hf/181Ta and for 111In/111Cd probes in polycrystalline ZrAl3 and Zr2Al3 compounds were measured in the temperature range 30–1100 K and compared with the results for isostructural hafnium aluminides. On the basis of the similarities of the numbers, sizes and asymmetries of electric field gradients, lattice site allocations were made. In all matrices, 181Hf/181Ta was found to substitute the Hf/Zr site. The 111In/111Cd impurities were also assigned to the Hf/Zr site in the compounds (Zr/Hf)Al3, but appear to substitute the two non-equivalent Al sites in the Zr2Al3 and Hf2Al3 phases.

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Authors and Affiliations

  1. PL 31-342, Kraków, Poland

    P. Wodniecki, B. Wodniecka & A. Kulińska

  2. II. Physikalisches Institut, Universität Göttingen, D-37073, Göttingen, Germany

    P. Wodniecki, A. Kulińska, M. Uhrmacher & K.-P. Lieb

Authors
  1. P. Wodniecki
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  2. B. Wodniecka
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  3. A. Kulińska
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  4. M. Uhrmacher
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  5. K.-P. Lieb
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Wodniecki, P., Wodniecka, B., Kulińska, A. et al. The Electric Field Gradients in (Zr/Hf)Al3 and (Zr/Hf)2Al3 Intermetallic Compounds Studied by 181Ta- and 111Cd-PAC Spectroscopy. Hyperfine Interactions 136, 535–539 (2001). https://doi.org/10.1023/A:1020574808266

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  • DOI: https://doi.org/10.1023/A:1020574808266

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