Affiliation:
1. Gujarat University
2. Maharaja Sayajirao University of Baroda
Abstract
The solid-liquid interface of Bi (1-x) Sb(x) crystal growth is most favorable for investigation of electron and phonon phenomena. Bismuth is a semimetal with high electron and hole mobility. Interest in Bi-Sb material system has recently been stimulated by promise of a new generation of thermoelectric materials based on these alloy. The crystals were grown using zone melting method with 1.0 and 1.5 cm/hour growth velocity and temperature gradient 650C/cm. The surface was determinal on the basis of growth feature profiles under optical microscope. The features observed on the top-free surface of as-grown crystals have also been discussed. The crystals have been characterized by using the powder XRD technique. The optical absorption was measured in the wave number range 510 cm-1 to 4000 cm-1. From the optical absorption through direct inter band transition.The results are reported and discussed in detailed.
Publisher
Trans Tech Publications, Ltd.
Subject
Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics
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