Abstract
We have investigated conditions for the fabrication of glass-coated wires from the Bi0.5Sb1.5Te3 solid solution by the Taylor-Ulitovsky method and assessed the influence of the coating material and drawing rate on the formation and Seebeck coefficient (thermoelectric power) of wires of various diameters. We have optimized conditions for the fabrication of long wires (up to 1 m) 100 to 250 μm in core diameter, with geometric parameters stable along their length. The structure of fracture surfaces of the wires has been examined by scanning electron microscopy. Their Seebeck coefficient (α) has been measured in the temperature range 70–420 K. We have obtained wires with 400-K α from 100 to 140 μV/K by drawing from a melt with an open surface and α = 180 μV/K by drawing from a melt in a closed system (the parent ingot had α = 200 μV/K).
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Original Russian Text © L.D. Ivanova, V.V. Molokanov, A.V. Krutilin, O.N. Uryupin, A.A. Shabaldin, 2015, published in Neorganicheskie Materialy, 2015, Vol. 51, No. 5, pp. 496–500.
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Ivanova, L.D., Molokanov, V.V., Krutilin, A.V. et al. Fabrication and thermoelectric power of wires from a solid solution between bismuth and antimony tellurides. Inorg Mater 51, 441–444 (2015). https://doi.org/10.1134/S0020168515050064
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DOI: https://doi.org/10.1134/S0020168515050064