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A simple model to analyze TDPAC measurements of electric field gradients due to repulsive impurities in a cubic lattice. Its application to theAgIn system

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Abstract

We present a description of the probe-impurity distant neighbours configuration for repulsive systems in a cubic lattice, using a continuous charge distribution around the probe nuclei. We propose a simple model for the charge distribution shape and its dependence with the impurity concentration. TDPAC measurements performed on111Cd probes in 1, 4, 7 and 20 at%AgIn alloys are reported and analyzed in the light of our model. In particular, the results suggest that impurities tend to form a cubic super-lattice with increasing concentration. Improvements to the model are discussed in connection with the possibility of getting quantitative information (like repulsive energies) from TDPAC measurements on repulsive systems.

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Authors and Affiliations

  1. Departamento de Física, Facultad de Cincias Exactas, U.N.L.P., C.C. 67, 1900, La Plata, Argentina

    F. H. Sánchez, C. P. Massolo, A. G. Bibiloni, J. Desimoni & A. R. López García

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  1. F. H. Sánchez
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  2. C. P. Massolo
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  3. A. G. Bibiloni
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  4. J. Desimoni
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  5. A. R. López García
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Sánchez, F.H., Massolo, C.P., Bibiloni, A.G. et al. A simple model to analyze TDPAC measurements of electric field gradients due to repulsive impurities in a cubic lattice. Its application to theAgIn system. Hyperfine Interact 20, 195–205 (1984). https://doi.org/10.1007/BF02073563

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  • DOI: https://doi.org/10.1007/BF02073563

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