Synthesis, structure and anisotropy of thermoelectric properties of Bi-=SUB=-2-=/SUB=-Te-=SUB=-2.7-=/SUB=-Se-=SUB=-0.3-=/SUB=- compound doped with samarium

We study crystallographically textured thermoelectric materials with electronic conductivity based on bismuth telluride doped samarium (Bi 2-x Sm x Te 2.7 Se 0.3 , where x=0, 0.05, 0.02, 0.05) obtained by the method of solvothermal synthesis and double pressing spark plasma sintering. The crystallographic texture was achieved sintering plate-like nanoparticles. texturing axis [001] coincided direction compression in process. An increase concentration leads to a decrease radial size synthesized nanoplates, which facilitates processes rotation sliding particles relative each other during and, as consequence, an anisotropy factor characterizing degree preferred grain orientation bulk material. Samarium doping affects particle initial powder, average material properties. It found that maximum figure merit weakly depends content falls range ~(0.6-0.7), while temperature position maxima noticeably shifts higher temperatures content. Keywords: materials, telluride, sintering, texturing,