Phase transformation in the system TlBi(Te1-xSex)2

✍ Scribed by K. Chrissafis; E. S. Vinga; M. Ozer; K. M. Paraskevopoulos; E. K. Polychroniadis

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 160 KB
• Volume: 39
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200310189

✦ Synopsis

Abstract

TlBiTe~2~ and TlBiSe~2~ ‐ that are ternary analogs of the IV‐VI semiconductors ‐, although they crystallize in the same space group R$ \bar 3 $m (D^5^~3d~), exhibit different behaviour during heating. The observed phase transformation depends on Se content (x) in the system TlBi(Te~1‐x~Se~x~)~2~ and the transformation disappears by increasing Se content after a certain value (x = 0.25). This dependence is examined through the analysis of the DSC non‐isothermal measurements and an attempt for the explanation of the observed behaviour is undertaken through the consideration of off‐center atoms. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)