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Probing into the similarities of grain boundary atomic structures across various materials systems


EMSL Project ID
47671

Abstract

To accelerate the fundamental understanding of interface and grain boundary structures which have been known to have great influences on various mechanical and electrical properties, we propose to study the similarity in grain boundary atomic structures across different materials systems. Although grain boundary structures in for example perovskite structured SrTiO3 and FCC metals have been intensively studied during the past few decades, the ability to extend current understanding of interfacial atomic structures to a vast variety of material systems can be accomplished by examining the structural similarities across different materials systems. Direct structural comparison among three FCC systems, including fluorite structured ceria, perovskite structured SrTiO3 and face-center-cubic (FCC) metals, provides insight into exploring the structure similarity and its guiding principles, which is highly desirable for extending our current knowledge into predicting interface structures in other cubic structured systems. The reason for the rapid access is straightforward; the graduate student working on this is nearing the end of his thesis. The results are needed to complete the research in this area prior to his graduation.

Project Details

Project type
Limited Scope
Start Date
2012-08-30
End Date
2012-10-30
Status
Closed

Team

Principal Investigator

Nigel Browning
Institution
University of Liverpool

Team Members

Timothy Droubay
Institution
Pacific Northwest National Laboratory