Abstract
A neutron scattering experiment was performed on the fast ionic conductor (CuPO3)0.5(CuI)0.5 using the time-of-flight spectrometer IN6 with the following parameters: λ = 5,1 A ̊, resolution (FWHM) Eo = 80 μev, 1.44 < Q < 2.04 A ̊-1. The spectra essentially consist of a quasielastic broadening of the elastic peak with a long inelastic tail up to 20 meV. The deconvolution of elastic and quasielastic contribution gives a constant value of the purely elastic contribution : 90 % for three temperatures. The D coefficients obey an Arrhenius law : D=2.57×10-5exp( -Ea RT)cm2s-1. with Ea = 2.6 KJ.mol-1. Only 22 % of Cu+ ions are implied in the diffusion motions compared to 50 % of Ag+ ions in the superionic AgPO3-AgI glass. The activation energy is much lower than the results previously obtained on Ag+ glasses. The motion described here certainly occurs locally without leading to long range diffusion which is involved in ionic conductivity.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 535-544 |
| Number of pages | 10 |
| Journal | Materials Research Bulletin |
| Volume | 24 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1989 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Ceramics and Composites
- Materials Chemistry
Cite this
Etude de la diffusion des cations Cu+ dans le verre (CuPO3)0.5(CuI)0.5 par diffusion quasielastique des neutrons. / Rousselot, C.; Mercier, R.; Malugani, J. P.; Tachez, M.; Angell, Charles; Dianoux, A. J.
In: Materials Research Bulletin, Vol. 24, No. 5, 1989, p. 535-544.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Etude de la diffusion des cations Cu+ dans le verre (CuPO3)0.5(CuI)0.5 par diffusion quasielastique des neutrons
AU - Rousselot, C.
AU - Mercier, R.
AU - Malugani, J. P.
AU - Tachez, M.
AU - Angell, Charles
AU - Dianoux, A. J.
PY - 1989
Y1 - 1989
N2 - A neutron scattering experiment was performed on the fast ionic conductor (CuPO3)0.5(CuI)0.5 using the time-of-flight spectrometer IN6 with the following parameters: λ = 5,1 A ̊, resolution (FWHM) Eo = 80 μev, 1.44 < Q < 2.04 A ̊-1. The spectra essentially consist of a quasielastic broadening of the elastic peak with a long inelastic tail up to 20 meV. The deconvolution of elastic and quasielastic contribution gives a constant value of the purely elastic contribution : 90 % for three temperatures. The D coefficients obey an Arrhenius law : D=2.57×10-5exp( -Ea RT)cm2s-1. with Ea = 2.6 KJ.mol-1. Only 22 % of Cu+ ions are implied in the diffusion motions compared to 50 % of Ag+ ions in the superionic AgPO3-AgI glass. The activation energy is much lower than the results previously obtained on Ag+ glasses. The motion described here certainly occurs locally without leading to long range diffusion which is involved in ionic conductivity.
AB - A neutron scattering experiment was performed on the fast ionic conductor (CuPO3)0.5(CuI)0.5 using the time-of-flight spectrometer IN6 with the following parameters: λ = 5,1 A ̊, resolution (FWHM) Eo = 80 μev, 1.44 < Q < 2.04 A ̊-1. The spectra essentially consist of a quasielastic broadening of the elastic peak with a long inelastic tail up to 20 meV. The deconvolution of elastic and quasielastic contribution gives a constant value of the purely elastic contribution : 90 % for three temperatures. The D coefficients obey an Arrhenius law : D=2.57×10-5exp( -Ea RT)cm2s-1. with Ea = 2.6 KJ.mol-1. Only 22 % of Cu+ ions are implied in the diffusion motions compared to 50 % of Ag+ ions in the superionic AgPO3-AgI glass. The activation energy is much lower than the results previously obtained on Ag+ glasses. The motion described here certainly occurs locally without leading to long range diffusion which is involved in ionic conductivity.
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UR - http://www.scopus.com/inward/citedby.url?scp=0024667768&partnerID=8YFLogxK
U2 - 10.1016/0025-5408(89)90100-1
DO - 10.1016/0025-5408(89)90100-1
M3 - Article
AN - SCOPUS:0024667768
VL - 24
SP - 535
EP - 544
JO - Materials Research Bulletin
JF - Materials Research Bulletin
SN - 0025-5408
IS - 5
ER -