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Electrolytic loading of hydrogen in metals studied by PAC

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Abstract

In previous work, we introduced hydrogen (H) into Ni and Pt metals at room temperature by electrolysis. To study H-vacancy interactions on an atomic scale, trapping of diffusing H atoms at impurity-vancancy complexes was detected using perturbed γ-γ angular correlations. Two new results are reported here: (1) Transformation rules are clarified between undecorated and H-decorated complexes which are detected after annealing Pt at 323 K. In addition, non-cubic In sites were observed to form by chargingannealed, Pt, which are attiributed either to H atoms at random in the lattice or to precursor nuclei of a Pt hydride. (2) NiH is observed to form under cathodic charging of Ni at high current densities, and detected by growth of a nonmagnetic, cubic metastable phase.

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Authors and Affiliations

  1. Department of Physics, Washington State University, 99164-2814, Pullman, Washington, USA

    Gary S. Collins, Gregeory McGhee, Steven L. Shropshire, Hwa-Jae Jang & Jiawen Fan

  2. Clark University, 01610, Worcester, MA, USA

    Reinhardt B. Schuhmann

  3. Brookhaven National Laboratory, 11973, Upton, NY, USA

    Reinhardt B. Schuhmann

Authors
  1. Gary S. Collins
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  2. Gregeory McGhee
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  3. Steven L. Shropshire
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  4. Hwa-Jae Jang
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  5. Jiawen Fan
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  6. Reinhardt B. Schuhmann
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Collins, G.S., McGhee, G., Shropshire, S.L. et al. Electrolytic loading of hydrogen in metals studied by PAC. Hyperfine Interact 60, 663–666 (1990). https://doi.org/10.1007/BF02399840

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