Oxygen mobility in the perovskite SrTi1-xFexO3-ð (x = 0.8)
Mashkina E, Magerl A, Ollivier J, Göbbels M, Seifert F (2006)
Publication Language: English
Publication Type: Journal article
Publication year: 2006
Journal
Book Volume: 74
Pages Range: 214106
Abstract
The dynamics of long range translation and local motions of oxygen in SrTi0.2 Fe0.8 O3-δ have been studied by electrical conductivity and quasielastic neutron scattering. The activation energy of the translational ionic diffusion measured by electrical conductivity is 0.97 eV for T>900°C. Both quasielastic linewidths and quasielastic intensities in neutron scattering show the presence of two motions. The Q independences indicate a localized character for these oxygen diffusion modes with activation energies of 0.43 and 0.27 eV for the "fast" and the "slow" local jumps, respectively. A model for the local oxygen motion is proposed involving oxygen jumps in the (0 k 0) plane either directly to the next unit cell or performing detours combining two and two site jumps resulting in the same final momentum transfer. © 2006 The American Physical Society.
Authors with CRIS profile
Andreas Magerl
Lehrstuhl für Kristallographie und Strukturphysik
Matthias Göbbels
Lehrstuhl für Mineralogie
Involved external institutions
France (FR)
Germany (DE)How to cite
APA:
Mashkina, E., Magerl, A., Ollivier, J., Göbbels, M., & Seifert, F. (2006). Oxygen mobility in the perovskite SrTi1-xFexO3-ð (x = 0.8). Physical Review B - Condensed Matter and Materials Physics, 74, 214106.
MLA:
Mashkina, Elena, et al. "Oxygen mobility in the perovskite SrTi1-xFexO3-ð (x = 0.8)." Physical Review B - Condensed Matter and Materials Physics 74 (2006): 214106.
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