Analysis of disordered nonstoichiometric Ln1-xAe xF3-x (Ln = Tb or Gd, and Ae = Ca or Sr) single crystals

Valentyn Vasyliev, Yuichi Michiue, Encarnación G. Víllora, Yoshitaka Matsushita, Akira Sato, Masahiro Nagao, Yoshiyuki Sugahara, Kiyoshi Shimamura

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

High quality nonstochiometric Tb- and Gdbased single crystals Tb 0.81Ca0.19F2.81 (TCF), Tb0.76Sr 0.24F2.76 (TSF), Gd0.85Ca0.15F 2.85 (GCF), Gd0.83Sr0.17F2.83 (GSF) are analyzed in crystallographic detail by single-crystal X-ray diffraction measurements. TSF shows only main reflections, and its structure is refined to a disordered P63/mmc structural model. Additional satellite reflections observed in GSF lead to an ordered twinned P3̄c1 structural model. The other two crystals TCF and GCF cannot be assigned uniquely to any of these space groups. Instead, their structures are interpreted as the coexistence of both space groups in separate domains.

Original languageEnglish
Pages (from-to)576-582
Number of pages7
JournalZeitschrift fur Kristallographie
Volume288
Issue number11
DOIs
Publication statusPublished - 2013 Nov 1

Keywords

  • Disordered structure
  • Nonstoichiometric compound
  • Rare-earth fluoride
  • Single crystal
  • Tysonite

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

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  • Cite this

    Vasyliev, V., Michiue, Y., Víllora, E. G., Matsushita, Y., Sato, A., Nagao, M., Sugahara, Y., & Shimamura, K. (2013). Analysis of disordered nonstoichiometric Ln1-xAe xF3-x (Ln = Tb or Gd, and Ae = Ca or Sr) single crystals. Zeitschrift fur Kristallographie, 288(11), 576-582. https://doi.org/10.1524/zkri.2013.1666