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An internal friction study of the vanadium-deuterium system

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Abstract

The internal friction of deuterium-doped vanadium has been investigated in the temperature range from 65 to 350 K. At low deuterium concentrations (≦0.18 at.−%) a relaxation effect has been observed near 90 K; its activation energy and its limiting relaxation tiem are 0.17 eV and 2×10−12 sec, respectively. A second internal friction peak (precipitation peak) appears in more heavily doped samples; the position of this second peak shifts to higher temperatures as the deuterium content is increased. Possible mechanisms for the two peaks are discussed. The phase diagram of the vanadium-deuterium system at low temperatures has been deduced from the correlation between the deuterium concentration and the position of the precipitation peak.

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Authors and Affiliations

  1. C.N.R.-Istituto di Acustica “O.M. Corbino”, Via Cassia 1216, I-00189, Rome, Italy

    G. Cannelli & F. M. Mazzolai

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  1. G. Cannelli
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  2. F. M. Mazzolai
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Cannelli, G., Mazzolai, F.M. An internal friction study of the vanadium-deuterium system. Appl. Phys. 1, 111–118 (1973). https://doi.org/10.1007/BF00887074

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