Fundamentals of proton self diffusion in proton conducting perovskite type oxides
This proposal requests 13 days on the IN11 spin-echo spectrometer to investigate the role of type (M) and concentration (x) of dopant atoms on the proton self-diffusion, on an intermediate length-scale, in proton conducting perovskite type oxides of the form BaZr1-xMxO3Hx. In particular, we aim to elucidate one of the biggest questions in the field of proton conducting oxides, namely if the dopant atoms act as well localized trapping centers for the proton diffusion or if they tend to affect the proton diffusion in a much more non-local way by altering the activation energies for proton migration over the whole perovskite lattice. To resolve this issue is not easy, but we have the experience in relation to QENS studies on proton conducting oxides as well as the theoretical tools to take on this challenge. It is our firm belief that the new insights into the mechanistic aspects of proton self-diffusion in proton conducting oxides will be of huge interest for the solid-state-ionics community and particularly for those working on proton conducting oxides. It may be noted that this proposal is part of an ILL PhD thesis to commence in early 2013.
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KARLSSON Maths; FOUQUET Peter; KOZA Michael Marek; NOFERINI Daria and WAHNSTROM Göran. (2013). Fundamentals of proton self diffusion in proton conducting perovskite type oxides. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.7-03-124
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