Proton Dynamics in Hydrated BaZr0.9M0.1O2.95 (M = Y and Sc) Investigated with Neutron Spin-Echo
Artikel i vetenskaplig tidskrift, 2016

Hydrated samples of the two proton conducting perovskites BaZr0.9M0.1O2.95 (M = Y and Sc) were investigated using neutron spin echo spectroscopy together with thermal gravimetric measurements, polarized neutron diffraction, and infrared spectroscopy, with the aim to determine how the atomic scale proton dynamics depend on temperature, and type of dopant atom, M. The results show the presence of pronounced localized proton motions for temperatures above ca. 300 K, characterized by relaxation times on the order of picoseconds to nanoseconds and governed by a wide distribution of activation energies due to a heterogeneous distribution of proton sites present, with no strong dependence on the type of dopant atom.

Författare

Daria Noferini

Chalmers, Fysik, Kondenserade materiens fysik

M. Koza

Institut Laue-Langevin

P. Fouquet

Institut Laue-Langevin

G. J. Nilsen

Institut Laue-Langevin

M. C. Kemei

University of California

Seikh Mohammad Habibur Rahman

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

M. Maccarini

Institut Laue-Langevin

Sten Eriksson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

Maths Karlsson

Chalmers, Fysik, Kondenserade materiens fysik

Journal of Physical Chemistry C

1932-7447 (ISSN) 1932-7455 (eISSN)

Vol. 120 26 13963-13969

Ämneskategorier

Den kondenserade materiens fysik

DOI

10.1021/acs.jpcc.6b03683

Mer information

Senast uppdaterat

2018-02-28