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Title: Diffusion barriers at mercury--cadmium--telluride/metal interfaces: The case of Hg/sub 1-//sub x/Cd/sub x/Te(110)/Yb/Al

Abstract

The rare-earth metals Yb and Sm show unique reactive behavior on mercury--cadmium--telluride (MCT) surfaces, due to the large rare-earth affinity for both Hg and Te. Semiempirical calculations of thermodynamic parameters using Miedema's model suggest that the rare earths should act as effective diffusion barriers at the interface between MCT and prototypical reactive metals such as Al, In, or Cr. We present here a synchrotron radiation photoemission investigation of the effect of Yb interlayers at the Hg/sub 1-//sub x/Cd/sub x/Te(110)/Al junction. Our results indicate that layers of Yb are effective in preventing Al--Te reaction and reducing the Al-induced mercury depletion of the substrate. Our data confirm that such a diffusion barrier effect is the result of the superior thermodynamic stability of the MCT/Yb reaction products at the interface.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455
OSTI Identifier:
6976549
Resource Type:
Journal Article
Journal Name:
J. Vac. Sci. Technol., A; (United States)
Additional Journal Information:
Journal Volume: 6:4
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALUMINIUM; CHEMICAL REACTIONS; DIFFUSION; CADMIUM TELLURIDES; ATOM TRANSPORT; DIFFUSION BARRIERS; FABRICATION; MERCURY TELLURIDES; YTTERBIUM; INTERFACES; PHOTOEMISSION; CADMIUM COMPOUNDS; CHALCOGENIDES; ELEMENTS; EMISSION; MERCURY COMPOUNDS; METALS; NEUTRAL-PARTICLE TRANSPORT; RADIATION TRANSPORT; RARE EARTHS; SECONDARY EMISSION; TELLURIDES; TELLURIUM COMPOUNDS; 360204* - Ceramics, Cermets, & Refractories- Physical Properties

Citation Formats

Raisanen, A, Wall, A, Chang, S, Philip, P, Troullier, N, Franciosi, A, and Peterman, D J. Diffusion barriers at mercury--cadmium--telluride/metal interfaces: The case of Hg/sub 1-//sub x/Cd/sub x/Te(110)/Yb/Al. United States: N. p., 1988. Web. doi:10.1116/1.575498.
Raisanen, A, Wall, A, Chang, S, Philip, P, Troullier, N, Franciosi, A, & Peterman, D J. Diffusion barriers at mercury--cadmium--telluride/metal interfaces: The case of Hg/sub 1-//sub x/Cd/sub x/Te(110)/Yb/Al. United States. https://doi.org/10.1116/1.575498
Raisanen, A, Wall, A, Chang, S, Philip, P, Troullier, N, Franciosi, A, and Peterman, D J. 1988. "Diffusion barriers at mercury--cadmium--telluride/metal interfaces: The case of Hg/sub 1-//sub x/Cd/sub x/Te(110)/Yb/Al". United States. https://doi.org/10.1116/1.575498.
@article{osti_6976549,
title = {Diffusion barriers at mercury--cadmium--telluride/metal interfaces: The case of Hg/sub 1-//sub x/Cd/sub x/Te(110)/Yb/Al},
author = {Raisanen, A and Wall, A and Chang, S and Philip, P and Troullier, N and Franciosi, A and Peterman, D J},
abstractNote = {The rare-earth metals Yb and Sm show unique reactive behavior on mercury--cadmium--telluride (MCT) surfaces, due to the large rare-earth affinity for both Hg and Te. Semiempirical calculations of thermodynamic parameters using Miedema's model suggest that the rare earths should act as effective diffusion barriers at the interface between MCT and prototypical reactive metals such as Al, In, or Cr. We present here a synchrotron radiation photoemission investigation of the effect of Yb interlayers at the Hg/sub 1-//sub x/Cd/sub x/Te(110)/Al junction. Our results indicate that layers of Yb are effective in preventing Al--Te reaction and reducing the Al-induced mercury depletion of the substrate. Our data confirm that such a diffusion barrier effect is the result of the superior thermodynamic stability of the MCT/Yb reaction products at the interface.},
doi = {10.1116/1.575498},
url = {https://www.osti.gov/biblio/6976549}, journal = {J. Vac. Sci. Technol., A; (United States)},
number = ,
volume = 6:4,
place = {United States},
year = {Fri Jul 01 00:00:00 EDT 1988},
month = {Fri Jul 01 00:00:00 EDT 1988}
}