Structural, Dimensional and Thermoelectric Properties of Melt Spun p-Bi0,5Sb1,5Te3

Authors A.A. Melnikov1,2, V.G. Kostishin1 , S.A. Kichik2, V.V. Alenkov2

1 National University of Science and Technology "MISIS", 4, Leninskiy Pr., 119049 Moscow, Russia

2 Crystal Ltd, 45B, Stantsionnaya Str., 141060 Korolev, Moscow region, Russia

Issue Volume 6, Year 2014, Number 3
Dates Received 19 May 2014; revised manuscript received 03 July 2014; published online 15 July 2014
Citation A.A. Melnikov, V.G. Kostishin, S.A. Kichik, V.V. Alenkov, J. Nano- Electron. Phys. 6 No 3, 03061 (2014)
PACS Number(s) 72.15.Jf, 72.20.Pa
Keywords Thermoelectricity (2) , Melt spinning, Melt spun powders, Bismuth and antimony telluride, Spark plasma sintering (2) .
Annotation Thermoelectric melt spun p-Bi0,5Sb1,5Te3 powders were obtained and their structural properties were studied. It was established that the crystallites constituting the powder particles are nanofragmented. Powders were compacted by vacuum hot pressing and spark plasma sintering. Thermoelectric characteristics of obtained samples were investigated in 100 K-700 K temperature range. The samples prepared by above methods posses low thermal conductivity while retaining values of the Seebeck coefficient and electrical conductivity comparable to conventional crystallized materials, thereby thermoelectric efficiency ZT reaches 1.05-1.15 at 330-350 K.

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