Abstract
The hP1-type phases in alloys of Cd, Hg, and In with Sn are stable in the valence electron concentration interval 3.80–3.95. Following a rule of Raynor, the axial ratioc/a decreases with increasing valence electron concentration,N /atb . Using lattice constant measurements the rule is confirmed, and by using density measurements the absence of constitutional vacancies is verified. Thec/a→N /atb relation of the hP1 phases is similar toc/a→N /atb of InSn m (0<m<0.1) and In3Sn. A bonding-type proposal, explaining the stability of these structures and the dependence of their axial ratio on valence electron concentration, is derived.
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Che, G.C., Ellner, M. & Schubert, K. The hP1-type phases in alloys of cadmium, mercury, and indium with tin. J Mater Sci 26, 2417–2420 (1991). https://doi.org/10.1007/BF01130189
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DOI: https://doi.org/10.1007/BF01130189