Orientational distribution and procedure parameters in hot pressed (Bi2Te3)/sub 0.90/(Bi2Se3)/sub 0.10/

Abstract

Single crystals of Bi/sub 2/Te/sub 3/ and its solid solutions with Bi/sub 2/Se/sub 3/ for n type material show anisotropy of thermoelectric property. Hot-pressed materials also show the anisotropy, but it is weaker than the single crystals and the one directional polycrystals. In a hot pressed material, crystal grains orient with an orientational distribution. In this work, we compared the orientational distributions of hot-pressed materials which were made by different process conditions and attempted to lead the best procedure parameters of a hot-pressed material that give a high Z-value.