DEVELOPMENT OF TELLURIUM CRYSTALS SUITABLE FOR CO2 LASER STUDIES

Authors
  1. Champness, C.H.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN);McGill Univ, Montreal QUE (CAN) Dept of Electrical Engineering
Abstract
Techniques have been developed for the growth of intrinsic tellurium single crystals with a diameter of 2 cm or greater. Experiments were also carried out to produce extrinsic single crystal tellurium by doping with antimony. From melts with an antimony content of 0.001 wt%, single crystals were obtained but from melts with 0.01 wt% Sb or greater polycrystallinity resulted. The polycrystalline ingots were found to consist of hexagonal columns aligned parallel to the c-axis and separated from each other by a Sb2Te3-Te eutechtic. The finally frozen solid-liquid interface from such ingots was found to be covered with three-cornered pyramids, forming the ends of the hexagonal columns.
Report Number
DREV-CR-16 — Final Report
Date of publication
15 May 1974
Number of Pages
25
DSTKIM No
75-02254
CANDIS No
25556
Format(s):
Hardcopy;Originator's fiche received by DSIS

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