Crystal structure of a new quaternary Mg-Zn-Ca-Li phase

Sergei Remennik, Chunjie Xu, Reut Brant, Louisa Meshi, Dan Shechtman

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

In course of a study of high strength, ductile alloys based on the Mg-Li system, we have identified a new quaternary phase with a composition of Mg 31Zn 26Ca 13Li 8. The structure of this phase was investigated by Transmission Electron Microscopy (TEM) using the Convergent Beam Electron Diffraction (CBED) technique. Full atomic model is proposed using direct methods applied to powder X-ray diffraction data. The phase has a cubic primitive unit cell with lattice parameter a = 9.386(8) and its crystal symmetry belongs to the Pm3 (No. 200) space group. The unit cell of the new phase exhibits a new structure type, which is a variant of the Mg 2Zn 11 structure. The reliability factors characterizing the Rietveld refinement procedure are: R p = 8.6%, R wp = 12.4%, R B = 6.9% and R f = 4.4%.

Original languageEnglish
Pages (from-to)62-67
Number of pages6
JournalIntermetallics
Volume22
DOIs
StatePublished - 1 Mar 2012

Keywords

  • A. Intermetallics
  • B. Crystallography
  • B. Phase identification
  • F. Chemical analysis
  • F. Diffraction (electron and X-ray)
  • F. Electron microscopy

Fingerprint

Dive into the research topics of 'Crystal structure of a new quaternary Mg-Zn-Ca-Li phase'. Together they form a unique fingerprint.

Cite this