Interlayer cation exchange stabilizes polar perovskite surfaces.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 25196987.
- Also identified by DOI 10.1002/adma.201401858 and PMC identifier 4241033.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Global optimization is used to study the structure of the polar KTaO3 (001) surface. It is found that cation exchange near the surface leads to the most stable structure. This mechanism is likely to be general to metal oxides containing cations of differing charge.