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Figure 5
Jump frequencies τn−1 of two hydrogen transport processes as a function of reciprocal temperature. To increase the statistics and reduce the uncertainty in Γn, the observed S(Q, ω) at all temperatures were resectioned and reanalysed over a wide Q range from 1.35 to 1.90 Å−1. The black dashed line shows the slope of τ1−1 at temperatures between 230 and 330 K, which gives an activation energy of 0.061 eV. The blue dashed line shows the expected slope of τ2−1 having an activation energy of 1.0 eV as determined by EC measurements. The insets show the hydrogen transport pathways (black arrows for the τ1−1 process and blue arrows for the τ2−1 process).

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 51| Part 6| December 2018| Pages 1564-1570
https://doi.org/10.1107/S1600576718013158
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