Funct. Mater. 2015; 22 (4): 470-474.
Low-temperature anomalies of the hardened tin conductivity
National Science Center "Kharkiv Institute of Physics and Technology", 1 Akademicheskaya Str., 61108 Kharkiv, Ukraine
The low-temperature anomalies of conductivity of tin's filaments obtained by cooling of the melt from T ~ (800-900) K with velocity v ~ 102 K/sec are investigated. The samples showed signs of hardening demonstrate the electro-physical and structure abnormalities at the helium temperatures in comparison with superconducting β-Sn modification. Arguments are presented that the semiconducting phases are supercooled allotropic modifications γ- and x-Sn which exist in equilibrium states above T ~ 430 K.
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