Atomic ordering in InAs sub 0. 5 P sub 0. 5 grown by organometallic vapor phase epitaxy

Journal Article · Mon Jul 01 04:00:00 EDT 1991 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.105563· OSTI ID:5488433

Jaw, D H; Chen, G S; Stringfellow, G B ^[1]

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1. Departments of Electrical Engineering and Materials Science and Engineering, 304 EMRO, University of Utah, Salt Lake City, Utah 84112 (USA)

InAsP epilayers grown by organometallic vapor phase epitaxy have been investigated using transmission electron microscopy. Electron diffraction studies using {l angle}110{r angle} cross sections indicate the formation of CuPt-like ordering on the group V sublattice. Only two of the four possible ordered variants are observed for epilayers grown on the exactly (001) oriented InP substrates. All the order-induced diffraction spots for InAsP are found to occur on the (110) cross section. Thus, the variants found in InAsP are 1/2({bar 1}11) and 1/2(1{bar 1}1), exactly the same as those found in GaInP, an alloy with CuPt ordering on the group III sublattice. This result is in agreement with recent studies on GaAsP and is contradictory to expectations based on the bond-length model proposed previously for GaInP alloys. The direction of substrate misorientation has a strong effect on the formation of ordered structures for normally (001) oriented InP substrates.

• DOE Contract Number: FG02-84ER45061
• OSTI ID: 5488433
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 59:1; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360601* -- Other Materials-- Preparation & Manufacture
360602 -- Other Materials-- Structure & Phase Studies
ALLOY SYSTEMS
ALLOYS
ARSENIC ALLOYS
ARSENIC COMPOUNDS
ARSENIDES
CHEMICAL COATING
CHEMICAL VAPOR DEPOSITION
CRYSTAL STRUCTURE
DEPOSITION
ELECTRON MICROSCOPY
ELEMENTS
EPITAXY
INDIUM ALLOYS
INDIUM ARSENIDES
INDIUM COMPOUNDS
INDIUM PHOSPHIDES
MICROSCOPY
MICROSTRUCTURE
NONMETALS
PHOSPHIDES
PHOSPHORUS
PHOSPHORUS COMPOUNDS
PNICTIDES
SURFACE COATING
TERNARY ALLOY SYSTEMS
TRANSMISSION ELECTRON MICROSCOPY
VAPOR PHASE EPITAXY