Oxygen mobility in the perovskite SrTi1-xFexO3-ð (x = 0.8)

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autorinnen und Autoren: Mashkina E, Magerl A, Ollivier J, Göbbels M, Seifert F
Zeitschrift: Physical Review B - Condensed Matter and Materials Physics
Jahr der Veröffentlichung: 2006
Band: 74
Seitenbereich: 214106
ISSN: 1550-235X
Sprache: Englisch


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.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Göbbels, Matthias Prof. Dr.
Lehrstuhl für Mineralogie
Magerl, Andreas Prof. Dr.
Lehrstuhl für Kristallographie und Strukturphysik


Einrichtungen weiterer Autorinnen und Autoren

Institute Laue-Langevin (ILL)
Universität Bayreuth


Zitierweisen

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.

BibTeX: 

Zuletzt aktualisiert 2018-09-08 um 12:38