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1998 | 94 | 3 | 497-502
Article title

Probabilistic Analysis of Site-Occupation Preferences in Ga_{x}In_{1-x}As_{y}Sb_{1-y} and Cd_{1-x}Mn_{x}Se_{y}Te_{1-y} Quaternary Compounds

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Content
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Languages of publication
EN
Abstracts
EN
Site-occupation preferences in quaternary GaInAsSb and CdMnSeTe compounds in tetrahedrally coordinated zinc-blende structures are discussed. Probabilistic eigenfunctions are defined to determine individual component pair-populations from measured average-pair distributions. The methodology and possible traps in interpreting site-occupation preferences of published EXAFS experimental overall average-pair distributions are discussed. The approach allows a deeper understanding of individual pair selective preferences in semiconducting multinary compounds. EXAFS reported departures from Bernoulli random distributions point to changes within elemental tetrahedral average-populations. Resolution requires that for tetrahedral structures experimental data best-fit be a 4th degree polynomial, product of a parabola by the factor x(1-x). The analysis shows that both materials have a marked preference for elemental tetrahedra with odd numbers of competing species of ions around a central ion.
Keywords
EN
Year
Volume
94
Issue
3
Pages
497-502
Physical description
Dates
published
1998-09
Contributors
author
  • Guest, Associazione EURATOM-ENEA sulla Fusione, Centro Ricerche Frascati, CP.65, 00044 Frascati(RM), Italy
author
  • Instytut Fizyki, Uniwersytet Jagielloński, Reymonta 4, 30-059 Kraków, Poland
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv94z329kz
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