Valence band changes in Sb2-xInxTe3 and Sb2Te3-ySey by transprot and Shubnikovde Haas effect measurements Kulbachinskii, V.A.; Dashevski, Z.M.; Inoue, M.; Sasaki, M.; Negishi, H.; Gao, W.X.; Lostak, P.; Horak, J.; de Visser, A.
An infinite staged Ettingshausen cooler of exponential shape has been constructed, using an oriented single crystal of Bi9+lb3. The magnetic field of B =0.75 T was provided by a permanent magnet system. A maximal temperature difference AT=42 K was achieved maintaining the heat sink at T=160 K. Referring to the temperature range and magnetic field strength used, this result represents a large cooling effect for an Ettingshausen cooling device. A simulation program that takes into account the temperature dependence of the transport coefficients was developed. Not only the predicted maximal temperature difference but also the ele.ctrical current necessary to obtain this maximum are in reasonable agreement with experimental results
We propose a method for preferential structural mientation meaSLrement in thermoelectric materials with anisotropic diamagnetic susceptiblity. An instrdment Lsing a sensitive torsion balance with eledronic compensation d the rotating moment is described. The advantage d the proposed method is illustrated with extruded B i S b , BlnT%SqTes and Bi2Te3-Bi2Se2 alloys.
We discuss two aspects d making aycgenic thermoelectric cooling batteries w l h high-T. superconductor (HTSC) passive branches: fabrication of active thermoelectric branches from reinforced B-Sb alloys, and passive MSC branches from YBa2Cu307-. + Ag cermets. The possibilky d using passive branches in the form d MSC films is discussed. Results d a single-stage, cryogenic, thermoelectric-cooler operation test are presented.
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