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Article
Intergrowth Compounds in the Zn-Rich Zn−Pd System:  Toward 1D Quasicrystal Approximants
Chemistry of Materials
  • Olivier Gourdon, Iowa State University
  • Gordon J. Miller, Iowa State University
Document Type
Article
Publication Version
Published Version
Publication Date
1-1-2006
DOI
10.1021/cm0526415
Abstract
A series of γ-brass related structures in the Zn-rich portion of the Zn−Pd phase diagram (ca. 80 at % Zn) is investigated using single-crystal diffraction and tight-binding electronic-structure calculations. Earlier research identified regular arrays of inversion antiphase domains (IAPDs) over a narrow composition range but did not report any characteristic superstructure(s) over the same range. Single-crystal X-ray diffraction allowed for the identification of lattice constants for six “phases” in Zn1-xPdx (0.15 < x < 0.25), and refinements of two crystal structures indicate two important potential building blocks for the intermediate compositions, one of these being the cubic γ-brass structure. A Farey tree construction is described that accounts for the observed long-period superlattice and provides a possible algorithm for targeting one-dimensional, quasiperiodic phases in this and related systems. Tight-binding electronic-structure calculations on the two limiting structures for this region of the Zn−Pd phase diagram suggest a relationship between structure and bonding in these complex intermetallic systems.
Comments

Reprinted (adapted) with permission from Chem. Mater., 2006, 18 (7), pp 1848–1856. Copyright 2006 American Chemical Society.

Copyright Owner
American Chemical Society
Language
en
File Format
application/pdf
Citation Information
Olivier Gourdon and Gordon J. Miller. "Intergrowth Compounds in the Zn-Rich Zn−Pd System:  Toward 1D Quasicrystal Approximants" Chemistry of Materials Vol. 18 Iss. 7 (2006) p. 1848 - 1856
Available at: http://works.bepress.com/gordon-miller/55/