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Phase separation in Cd/sub 1//sub -//sub x/Zn/sub x/Te grown by molecular-beam epitaxy

Journal Article · · J. Vac. Sci. Technol., B; (United States)
DOI:https://doi.org/10.1116/1.583806· OSTI ID:6805172
The ternary system Cd/sub 1-//sub x/Zn/sub x/Te has been a leading candidate for use as a lattice matched buffer layer for a variety of Hg-containing II--VI compounds. We have grown films over the entire composition range on GaAs substrates. We find that both ZnTe and CdTe grow well, but that the films degrade substantially for ternary compositions. Synchrotron x-ray scattering shows that ternary films can phase separate, with CdTe, ZnTe, and differing compositions of Cd/sub 1-//sub x/Zn/sub x/Te all present within one film. Transmission electron microscope images show features which are similar to those seen in In/sub 1-//sub x/Ga/sub x/As/sub 1-//sub y/P/sub y/ which has undergone a partial spinodal decomposition.
Research Organization:
ATandT Bell Laboratories, Holmdel, New Jersey 07733
OSTI ID:
6805172
Journal Information:
J. Vac. Sci. Technol., B; (United States), Journal Name: J. Vac. Sci. Technol., B; (United States) Vol. 5:3; ISSN JVTBD
Country of Publication:
United States
Language:
English