Stability of group IV-VI semiconductor alloys

Journal Article · Mon May 15 00:00:00 EDT 1989 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.39.10995· OSTI ID:6259801

Salamanca-Young, L; Nahm, S; Wuttig, M; Partin, D L; Heremans, J

We present transmission electron microscopy results on Pb/sub 1/minus//ital x//Eu/sub /ital x//Te alloys that show evidence for a compositional instability for /ital x/approx.0.5 when the alloys are grown on BaF/sub 2/ substrates. The Pb/sub 1/minus//ital x//Eu/sub /ital x//Te alloy becomes stable at room temperature if a buffer layer of PbTe is grown on the BaF/sub 2/ substrate prior to the growth of the Pb/sub 1/minus//ital x//Eu/sub /ital x//Te layer. The stabilization of the Pb/sub 1/minus//ital x//Eu/sub /ital x//Te solid solution is the result of the additional energy term due to the strain between the Pb/sub 1/minus//ital x//Eu/sub /ital x//Te film and the PbTe buffer layer. The estimated critical temperatures for decomposition of the Pb/sub 1/minus//ital x//Eu/sub /ital x//Te alloys with and without the PbTe buffer layer are approx.0 and approx.366 K, respectively, in accord with the experimental observations.

• Research Organization: Department of Chemical and Nuclear Engineering, University of Maryland, College Park, Maryland 20742(US); General Motors Research Laboratories, Warren, Michigan 48090
• OSTI ID: 6259801
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:15; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM FLUORIDES
ELECTRON MICROSCOPY
EUROPIUM ALLOYS
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
LEAD ALLOYS
MICROSCOPY
PHASE STUDIES
QUANTITY RATIO
RARE EARTH ALLOYS
STABILIZATION
SUBSTRATES
TELLURIUM ALLOYS
TRANSMISSION ELECTRON MICROSCOPY