TDPAC measurements on phase transition and hydrogen up-take in C15 laves phases |
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| Authors: | R Heidinger P Peretto S Choulet |
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| Institution: | 1. Kernforschungszentrum Karlsruhe, Institut für Genetik und für Toxikologie von Spaltstoffen, Postfach 3640, D 7500, Karlsruhe, Federal Republic of Germany
2. DRF/Laboratoire des Interactions Hyperfines, Centre d'Etudes Nucléaires de Grenoble, 85X - 38041, Grenoble Cedex, France
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| Abstract: | Intermetallic compounds with C15 structure are studied by TDPAC in the search for changes in the electric field gradient (EFG) on181Ta probes due to martensitic phase transition and hydrogen absorption. The residual low EFG of the cubic phase of HfV2, ZrV2 and Hf5Zr5V2 is distinctly increased in the low temperature modification. Hydrogen does not affect the distribution of probe sites, but influences the features of the martensitic transition. In TaV2 the sites with low EFG are split into an unperturbed and a strongly perturbed fraction. |
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