Statistical model analysis of local structure of quaternary sphalerite crystals

Структура и свойства полупроводников с переходными элементами

Автор(и)

  • B.V. Robouch INFN-Laboratori Nazionali di Frascati, Via E. Fermi, 40, Frascati I-00044, Italy
  • J. Sciesiñski Institute of Nuclear Physics, Krakow, Poland
  • E. Sciesiñska Institute of Nuclear Physics, Krakow, Poland
  • V.I. Ivanov-Omskii A.F. Ioffe Physical-Technical Institute, St. Petersburg 194021, Russia
  • A. Mycielski Instytut Fizyki PAN, Al. Lotnikow, Warszawa 32/46, Poland
  • J. Cebulski Institute of Physics, University of Rzeszow, Rejtana, 16A, Rzeszow 35-310, Poland
  • J. Polit Institute of Physics, University of Rzeszow, Rejtana, 16A, Rzeszow 35-310, Poland
  • M. Piccinini INFN-Laboratori Nazionali di Frascati, Via E. Fermi, 40, Frascati I-00044, Italy
  • M. Cestelli Guidi INFN-Laboratori Nazionali di Frascati, Via E. Fermi, 40, Frascati I-00044, Italy
  • E.M. Sheregii Institute of Physics, University of Rzeszow, Rejtana, 16A, Rzeszow 35-310, Poland
  • A. Marcelli INFN-Laboratori Nazionali di Frascati, Via E. Fermi, 40, Frascati I-00044, Italy
  • A. Kisiel Instytut Fizyki, Universytet Jagiellonski, Reymonta, 4, Krakow 30-059, Poland
  • E. Burattini University of Verona, Department of Informatics, str. Le Grazie 15, Verona 37134, Italy

DOI:

https://doi.org/10.1063/1.2719958

Ключові слова:

local crystal structure; statistical model.

Анотація

At the 2004 Ural International Winter School, we introduced the statistical strained tetrahedron model and discussed ternary tetrahedron structured crystals. The model allows one to interpret x-ray absorption fine structure (EXAFS) data and extract quantitative information on ion site occupation preferences and on the size and shape of each elemental constituent of the configuration tetrahedra. Here we extend the model to cover quaternary sphalerite crystal structures. We discuss the two topologically different quaternary sphalerite systems: the pseudo balanced A1-xBxYyZ1-y (2:2 cation:anion ratio), and the unbalanced AxBx'C1-x-x'Z or AXyYy'Z1-y-y' (3:1 or 1:3 cation:anion ratios) truly quaternary alloy systems. These structural differences cause preference values in pseudo quaternaries to vary with the relative contents, but to remain constant in truly quaternary compounds. We give equations to determine preference coefficient values from EXAFS or phonon spectra and to extract nearest-neighbour inter-ion distances by EXAFS spectroscopy. The procedure is illustrated and tested on CdMnSeTe, GaInAsSb, and ZnCdHgTe quaternary alloys.

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Опубліковано

2007-02-05

Як цитувати

(1)
Robouch, B.; Sciesiñski, J.; Sciesiñska, E.; Ivanov-Omskii, V.; Mycielski, A.; Cebulski, J.; Polit, J.; Piccinini, M.; Guidi, M. C.; Sheregii, E.; Marcelli, A.; Kisiel, A.; Burattini, E. Statistical Model Analysis of Local Structure of Quaternary Sphalerite Crystals: Структура и свойства полупроводников с переходными элементами. Fiz. Nizk. Temp. 2007, 33, 291-303.

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