Fundamentals of proton self diffusion in proton conducting perovskitetype oxides

DOI

We request 8 days on IN16B, with the aim to investigate proton dynamics in the classic proton conducting oxides, BaZr0.9M0.1O3H0.1 (M = Y and Sc). The ultimate aim is to correlate the large difference in proton conductivity between the two investigated materials to any differences in the local (or intermediate-range) proton dynamics observed with QENS. This is not only of huge scientific interest but also important for the development of strategies for developing new compounds with enhanced proton conduction. The proposed experiment builds on previous experiments on IN11C, where proton dynamics was clearly identified however where the important Q-dependence of the dynamics could not be obtained due to an unfavorable polarization and concomitantly large error bars in the low-Q regime (<0.7 Å-1) of the data. This is, however, a problem related to the spin-echo technique and will as such be overcome with the here proposed experiments. In addition, we request 2 days on D7, in order to separate the contributions from coherent and incoherent scattering, and specifically determine the proton concentration in the two samples, which will be important for the data analysis of the QENS data.

Identifier
DOI https://doi.org/10.5291/ILL-DATA.7-03-138
Metadata Access https://data.ill.fr/openaire/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=10.5291/ILL-DATA.7-03-138
Provenance
Creator Frick, Bernhard; Noferini, Daria; Nilsen, Goran; Karlsson, Maths; Koza, Michael Marek
Publisher Institut Laue-Langevin
Publication Year 2015
Rights OpenAccess; info:eu-repo/semantics/openAccess
OpenAccess true
Representation
Resource Type Dataset
Size 6 GB
Version 1
Discipline Particles, Nuclei and Fields