Abstract
Forced solutions of Tl plus 10 at.% of Na, Zn, Ag, Cd, or Sn and of Tl plus 6, 8, and 10 at.% In have been produced by vapour quenching upon a substrate cooled to 0.3 K. The lattice order of these, and similar pure Tl films, could be increased by annealing. The degree of order was mapped by changes in resistivity and in the phonon spectrum as studied by electron tunneling. As for lead based alloys, the stability of metastable disordered phases seems to be governed by the impurity melting temperature. Structure in superconductive tunneling curves, caused by localized phonon modes, was seen for In but not for the other impurities.
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Supported in part by the Swedish Natural Science Research Council.
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Granqvist, C.G., Claeson, T. Localized phonons and lattice order transformations in thallium based alloys by superconductive tunneling. Z. Physik 269, 23–29 (1974). https://doi.org/10.1007/BF01668864
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DOI: https://doi.org/10.1007/BF01668864