- Tytuł:
- Probabilistic Analysis of Site-Occupation Preferences in Ga$\text{}_{x}$In$\text{}_{1-x}$As$\text{}_{y}$Sb$\text{}_{1-y}$ and Cd$\text{}_{1-x}$Mn$\text{}_{x}$Se$\text{}_{y}$Te$\text{}_{1-y}$ Quaternary Compounds
- Autorzy:
-
Robouch, B.
Kisiel, A. - Powiązania:
- https://bibliotekanauki.pl/articles/1992071.pdf
- Data publikacji:
- 1998-09
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
- 63.90.+t
- Opis:
- 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.
- Źródło:
-
Acta Physica Polonica A; 1998, 94, 3; 497-502
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki