Ionic conduction and crystal structure of β-Pb1-xSnxF2 (x ≤ 0.3)

Yoshiaki Ito, T. Mukoyama, Kazumasa Ashio, Kazuhide Yamamoto, Yoichiro Suga, Sinzo Yoshikado, Christian Julien, Takanori Tanaka

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The crystal structures of β-Pb0.9Sn0.1F2(Sn10) and β-Pb0.8Sn0.2F2(Sn20) were determined using single crystal intensity data on a four-circle diffractometer. The structures have cubic symmetry; the lattice parameters: a = 5.946(1) Å, V = 210.2(2) Å3, space group Fm3m (No. 225) for Sn10 and a = 5.957(1) Å, V = 211.4(1) Å3, space group Fm3m (No. 225) for Sn20. The structures were refined to WR = 4.2% for Sn10 and 3.6% for Sn20 by the least-squares method, using 76 unique reflections with |F0| > 3σ(|F0|). The fluorine ions are statistically distributed in 32 sites of (0.25 + δ, 0.25 + δ, 0.25 + δ). δ, displacement from the normal fluorine site, increases with the SnF2 content. The isotropic temperature factor of the fluorine, Biso = 16.5(2.3) Å2, for Sn20, is very large compared with that for Sn10 (Biso = 3.18(45) Å2). Ionic conductivity in this system increases with the magnitude of the temperature factor of the fluoride ion.

Original languageEnglish
Pages (from-to)291-299
Number of pages9
JournalSolid State Ionics
Volume106
Issue number3-4
Publication statusPublished - Feb 1 1998

Fingerprint

Ionic conduction
Fluorine
fluorine
Crystal structure
conduction
crystal structure
Ions
Diffractometers
Ionic conductivity
least squares method
diffractometers
Fluorides
ion currents
Lattice constants
fluorides
lattice parameters
ions
Single crystals
Temperature
temperature

Keywords

  • β-PbSnF (x < 0.3)
  • Anion disorder
  • Fluoride ion conductor
  • Single crystal X-ray structure analysis

ASJC Scopus subject areas

  • Electrochemistry
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Materials Chemistry
  • Condensed Matter Physics

Cite this

Ito, Y., Mukoyama, T., Ashio, K., Yamamoto, K., Suga, Y., Yoshikado, S., ... Tanaka, T. (1998). Ionic conduction and crystal structure of β-Pb1-xSnxF2 (x ≤ 0.3). Solid State Ionics, 106(3-4), 291-299.

Ionic conduction and crystal structure of β-Pb1-xSnxF2 (x ≤ 0.3). / Ito, Yoshiaki; Mukoyama, T.; Ashio, Kazumasa; Yamamoto, Kazuhide; Suga, Yoichiro; Yoshikado, Sinzo; Julien, Christian; Tanaka, Takanori.

In: Solid State Ionics, Vol. 106, No. 3-4, 01.02.1998, p. 291-299.

Research output: Contribution to journalArticle

Ito, Y, Mukoyama, T, Ashio, K, Yamamoto, K, Suga, Y, Yoshikado, S, Julien, C & Tanaka, T 1998, 'Ionic conduction and crystal structure of β-Pb1-xSnxF2 (x ≤ 0.3)', Solid State Ionics, vol. 106, no. 3-4, pp. 291-299.
Ito Y, Mukoyama T, Ashio K, Yamamoto K, Suga Y, Yoshikado S et al. Ionic conduction and crystal structure of β-Pb1-xSnxF2 (x ≤ 0.3). Solid State Ionics. 1998 Feb 1;106(3-4):291-299.
Ito, Yoshiaki ; Mukoyama, T. ; Ashio, Kazumasa ; Yamamoto, Kazuhide ; Suga, Yoichiro ; Yoshikado, Sinzo ; Julien, Christian ; Tanaka, Takanori. / Ionic conduction and crystal structure of β-Pb1-xSnxF2 (x ≤ 0.3). In: Solid State Ionics. 1998 ; Vol. 106, No. 3-4. pp. 291-299.
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