The CsCaF3-x Hx solid solution (0 ≤ x ≤ 1.70): Structural characteristics and hydrogen diffusion investigation

Hyung Ho Park; Jean Senegas; Jean Maurice Reau; Michel Pezat; Bernard Darriet; Paul Hagenmuller

doi:10.1016/0025-5408(88)90202-4

The CsCaF_3-x H_x solid solution (0 ≤ x ≤ 1.70): Structural characteristics and hydrogen diffusion investigation

Hyung Ho Park, Jean Senegas, Jean Maurice Reau, Michel Pezat, Bernard Darriet, Paul Hagenmuller

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The investigation of the substitution of hydrogen to fluorine in CsCaF₃ shows existence of a solid solution CsCaF_3-xH_x (0 ≤ x ≤ 1.70) with cubic perovskite type structure. Both X-ray powder diffraction and wide line NMR show a statistical distribution of hydrogen and fluorine anions. The thermal evolution of the line width in the NMR spectra for ¹H and ¹⁹F has been studied. The hydride ion is the only mobile one. Ionic conductivity measurements seem to confirm a diffusion mechanism based on anionic hydrogen vacancies.

Original language	English
Pages (from-to)	1127-1138
Number of pages	12
Journal	Materials Research Bulletin
Volume	23
Issue number	8
DOIs	https://doi.org/10.1016/0025-5408(88)90202-4
Publication status	Published - 1988 Aug

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/0025-5408(88)90202-4

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abstract = "The investigation of the substitution of hydrogen to fluorine in CsCaF3 shows existence of a solid solution CsCaF3-xHx (0 ≤ x ≤ 1.70) with cubic perovskite type structure. Both X-ray powder diffraction and wide line NMR show a statistical distribution of hydrogen and fluorine anions. The thermal evolution of the line width in the NMR spectra for 1H and 19F has been studied. The hydride ion is the only mobile one. Ionic conductivity measurements seem to confirm a diffusion mechanism based on anionic hydrogen vacancies.",

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AU - Park, Hyung Ho

AU - Senegas, Jean

AU - Reau, Jean Maurice

AU - Pezat, Michel

AU - Darriet, Bernard

AU - Hagenmuller, Paul

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AB - The investigation of the substitution of hydrogen to fluorine in CsCaF3 shows existence of a solid solution CsCaF3-xHx (0 ≤ x ≤ 1.70) with cubic perovskite type structure. Both X-ray powder diffraction and wide line NMR show a statistical distribution of hydrogen and fluorine anions. The thermal evolution of the line width in the NMR spectra for 1H and 19F has been studied. The hydride ion is the only mobile one. Ionic conductivity measurements seem to confirm a diffusion mechanism based on anionic hydrogen vacancies.

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