TEXTURE DEVELOPMENT IN BI2TE3 DURING HOT-FORGING

The development of crystallographic texture in hot-forged polycrystall ine Bi2Te3 samples was studied. Texture was evaluated with the use of the March-Dollase model in conjunction with a Rietveld analysis of x-r ay diffraction data. It was determined that during forging a strong (0 001) texture develops along the loading axis. The magnitude of the (00 01) texture increases systematically with the amount of height reducti on during hot-forging. The correlation between the observed deformatio n and the March-Dollase texture model suggests that grain rotation is the primary mechanism for texture development in Bi2Te3.