Document
Generically Dependent Continuant
RDF description of Influence of growth direction on order-disorder transition in (GaAs)1-x(Si2)x alloys - http://orbis.uaslp.mx/vivo/individual/scopus1073
Physical Review B - Condensed Matter and Materials Physics
Article
Information Content Entity
Influence of growth direction on order-disorder transition in (GaAs)1-x(Si2)x alloys
alloy; arsenic derivative; gallium; silicon derivative; article; concentration response; crystal structure; molecular dynamics; validation process; X ray diffraction
(GaAs)1-x(Si2)x metastable alloys were epitaxially grown on (001), (111), (110), and (112) GaAs. Single-crystal alloys were obtained for Si concentrations in the range 0≤x≤0.43. At higher concentrations the Si segregated. The long-range order parameter, for each growth direction studied, was determined as a function of Si concentration by high-resolution x-ray diffraction. The behavior of this parameter with Si concentration is influenced by growth direction. This fact provides direct evidence that the substrate geometry affects the atomic ordering of these alloys. The results obtained from these alloys provide additional support to the validity of the proposal that the growth direction influences the order-disorder transition observed in other alloys of this kind.