Abstract
High-voltage transmission electron microscopy has shown that undoped single crystals of indium phosphide, grown by the liquid-encapsulated Czochralski technique, can contain linear arrays of faulted dislocation loops. The plane of the loops is (1 1 0), the fault vector is 1/n [1 1 0] and the Burgers vector of the dislocation loop is 1/n [1 1 0]. A direct correlation has been obtained between these loops and arrays of both ridge and prism features revealed by chemical etching. Sequential use of two etchants has also established a direct link between the faulted dislocation loops and the slip dislocations induced by thermal stresses during crystal growth. A study of a number of crystals grown from differently prepared starting materials suggests that the formation of the loops is associated with departures from stoichiometry and inhibited by the presence of dopant impurities.
Similar content being viewed by others
References
G. T. Brown, B. Cockayne andW. R. MacEwan,J. Mater. Sci. 15 (1980) 2539.
B. Cockayne, G. T. Brown andW. R. MacEwan,J. Crystal. Growth 51 (1981) 461.
G. T. Brown, B. Cockayne andW. R. MacEwan, Proceedings of the 2nd Oxford Conference on Microscopy of Semiconductors, Oxford, Institute of Physics Conference Series (Institute of Physics, London), to be published.
Idem, J. Crystal Crowth 51 (1981) 369.
J. B. Mullin, A. Royle, B. W. Straughan, Proceedings of the International Symposium on GaAs and Related Compounds, Aachen, 1970 (Institute of Physics, London) p. 71.
W. Bardsley, B. Cockayne, G. W. Green, D. T. J. Hurle, G. C. Joyce, J. M. Roslington, P. J. Tufton andH. C. Webber,J. Crystal Growth 24/25 (1974) 39.
B. Cockayne, W. R. MacEwan andG. T. Brown,J. Mater. Sci. 15 (1980) 2785.
A. Huber andN. T. Linh,J. Crystal Growth 29 (1975) 80.
M. Abrahams andC. J. Buiocchi,J. Appl. Phys. 36 (1965) 2855.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Brown, G.T., Cockayne, B. & MacEwan, W.R. The identification of faulted prismatic dislocation loops in single crystals of undoped InP. J Mater Sci 16, 2867–2876 (1981). https://doi.org/10.1007/BF02402852
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02402852