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Issue 20, 2017, Issue in Progress
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Mixed conduction in BaF2 nanocrystals under high pressure

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Abstract

The charge transport behavior of barium fluoride nanocrystals has been investigated by in situ impedance measurement up to 23 GPa. It was found that the parameters changed discontinuously at each phase transition. The charge carriers in BaF2 nanocrystals include both F ions and electrons. Pressure makes both the F ions diffusion and electronic transport more difficult. The defects at grains dominate the electronic transport process. Pressure could make the charge–discharge processes in the Fm3m and Pnma phases more difficult. The electron conduction plays a dominant role in the transport process. In the Fm3m and Pnma phases, the electron transference number increases with increasing pressure.

Graphical abstract: Mixed conduction in BaF2 nanocrystals under high pressure

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Publication details

The article was received on 07 Dec 2016, accepted on 13 Feb 2017 and first published on 20 Feb 2017


Article type: Paper
DOI: 10.1039/C6RA27837J
RSC Adv., 2017,7, 12098-12102
  • Open access: Creative Commons BY license
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    Mixed conduction in BaF2 nanocrystals under high pressure

    X. Cui, T. Hu, J. Wang, J. Zhang, R. Zhao, X. Li, J. Yang and C. Gao, RSC Adv., 2017, 7, 12098
    DOI: 10.1039/C6RA27837J

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