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Ordering of the heavy anions in mixed BaFBr0.5I0.5 crystals: Experimental results

Contributors

Rey, Julien M.; Bill, Hans; Hagemann, Hans-Rudolf; Kubel, Frank

Published in

Physical review. B, Condensed matter and materials physics, vol. 72, no. 18, 184107

Publication date

2005

Abstract

Mixed matlokite hosts of composition BaFBrxI1–x(0x1) (pure and doped with Sm2+, Eu2+) were studied with x-ray crystallography, luminescence, Raman, and electron paramagnetic resonance (EPR) spectroscopy. Results are presented for BaFBr0.5I0.5 which demonstrate that a ferrielectric domain structure is formed due to the fact that the heavy halogen ions form separate sublattices with randomly distributed domain walls. The space group of a domain is P4 mm (No. 99). The EPR data from Eu2+ allowed to determine the volume fraction of domains.

Keywords

  • Barium compounds
  • Fluorine compounds
  • X-ray crystallography
  • Raman spectra
  • Paramagnetic resonance
  • Space groups
  • Samarium
  • Europium
  • Luminescence

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

REY, Julien M. et al. Ordering of the heavy anions in mixed BaFBr0.5I0.5 crystals: Experimental results. In: Physical review. B, Condensed matter and materials physics, 2005, vol. 72, n° 18, p. 184107. doi: 10.1103/PhysRevB.72.184107

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Article (Published version)

Identifiers

Journal ISSN

1098-0121
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658downloads

Technical informations

Creation

02/10/2009 15:18:58

First validation

02/10/2009 15:18:58

Update

14/03/2023 15:15:40

Status update

14/03/2023 15:15:40

Last indexation

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