Synthesis and crystal structure of (Sr1-xLa1+x)Zn1-xO3.5-x/2(0.01 ≤ × < 0.03)

Hisanori Yamane, Haruya Hara, Shun ichi Kubota, Masahiko Shimada, Yasuo Yamaguchi

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

(Sr1-xLa1+x)Zn1-xO3.5-x/2(0.01 ≤ × < 0.03), was prepared at 1373 K in the SrO-La2O3-ZnO system. The X-ray and neutron powder diffraction peaks were indexed with a body-centered tetragonal unit cell (a = 3.75 and c = 13.57 Å for the sample x = 0.01). Weak diffuse superstructure reflections having periods of ∼ 2×a and ∼ 2×c were observed in electron diffraction patterns. The basic statistical structure of the superstructure was refined by Rietveld analysis for X-ray and neutron powder diffraction patterns of the sample x = 0.01 with a model related to an oxygen-deficient K2NiF4-type structure, space group I4/mmm, Z = 2, Rwp = 0.1317, Rp = 0.1052, RI = 0.0566, and RF = 0.0371 for X-ray data and Rwp = 0.0796, Rp = 0.0615, R1 = 0.0395, and RF = 0.0252 for neutron data. In a local structure model, the Zn atom is coordinated by four oxygen atoms. Sr and La atoms are in the eightfold coordination of oxygen atoms.

Original languageEnglish
Pages (from-to)19-25
Number of pages7
JournalJournal of Solid State Chemistry
Volume159
Issue number1
DOIs
Publication statusPublished - 2001

Keywords

  • (SrLa)ZnO
  • Electron diffraction
  • KNiF-type structure
  • Local structure
  • Neutron powder diffraction
  • Rietveld analysis
  • Strontium lanthanum zinc oxide
  • X-ray powder diffraction
  • ZnOtetrahedron

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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