Oxygen diffusion in ceria doped with rare-earth elementsShow others and affiliations
2017 (English)In: Physical Chemistry, Chemical Physics - PCCP, ISSN 1463-9076, E-ISSN 1463-9084, Vol. 21, p. 13723-13730Article in journal (Refereed) Published
Abstract [en]
We examine the effects of the dopant type and the dopant distribution on the ion diffusion in ceria doped with rare-earth elements (Pr, Nd, Pm, Sm, Eu, and Gd). Diffusion is simulated by means of a Kinetic Monte Carlo method using input transition rates derived from diffusion barriers calculated in the framework of density functional theory (DFT). Based on diffusion simulations, we discuss the characteristics of the dopants in terms of the diffusion barriers, and study oxygen ion trajectories for different dopants and distributions. Our simulations show a trend of increasing ion diffusivity with increasing atomic number for all distributions.
Place, publisher, year, edition, pages
ROYAL SOC CHEMISTRY , 2017. Vol. 21, p. 13723-13730
National Category
Theoretical Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-138469DOI: 10.1039/c6cp06460dISI: 000402488300037PubMedID: 28497151OAI: oai:DiVA.org:liu-138469DiVA, id: diva2:1111759
Note
Funding Agencies|Swedish Energy Agency (STEM) [35515-1]; Carl Tryggers Foundation [CTS 14: 433]; Swedish Research Council (VR) [2014-5993, 2014-4750]; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]; [LM2015070]
2017-06-192017-06-192017-06-19