Show simple item record

dc.contributor.authorHu, Xuan
dc.contributor.authorPhillips, Patrick J
dc.contributor.authorMazumdar, Dipanjan
dc.contributor.authorIdrobo, Juan Carlos
dc.contributor.authorKolesnik, Stanislaw
dc.contributor.authorGupta, Arunava
dc.date.accessioned2017-01-30T17:36:18Z
dc.date.available2017-01-30T17:36:18Z
dc.date.issued2016-11
dc.identifier.bibliographicCitationHu, X., Phillips, P. J., Mazumdar, D., Idrobo, J. C., Kolesnik, S., Gupta, A., Ogut, S. and Klie, R. F. Atomic and electronic structure of Ti substitution in Ca3Co4O9. Journal of Applied Physics. 2016. 120(20). DOI: 10.1063/1.4966938.en_US
dc.identifier.issn00218979
dc.identifier.urihttp://hdl.handle.net/10027/21488
dc.description© 2016 by American Institute of Physics Inc., Journal of Applied Physicsen_US
dc.description.abstractWe examine the role of Ti doping in the incommensurately layered thermoelectric oxide material Ca3Co4O9 (CCO). The measured Seebeck coefficient of S = 135 µV /K in Ti-doped CCO thin films of composition Ca3Co3.8Ti0.2O9 indicates no significant enhancement of S compared to pristine CCO, thus confirming prior experimental results. Using a combination of aberration-corrected scanning transmission electron microscopy, electron energy-loss spectroscopy and first-principles computations, we determine the atomic and electronic structures of Ti-doped CCO, including the preferred location of Ti dopants and valence states of Ti and Co atoms. Our findings on the structural, electronic and transport properties of the Ti-doped CCO are discussed in light of previously published resultsen_US
dc.description.sponsorshipX.H. and R.F.K. acknowledge support from the National Science Foundation (Grant No DMR-1408427). Electron microscopy research was conducted as part of a user project through Oak Ridge National Laboratory's Center for Nanophase Materials Sciences (CNMS), which is a U.S. Department of Energy Office of Science User Facility. This research used resources of the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231 (X.H., S.O.).en_US
dc.publisherAmerican Institute of Physicsen_US
dc.subjectAtomsen_US
dc.subjectCalciumen_US
dc.subjectCobalten_US
dc.subjectTransmission electron microscopyen_US
dc.titleAtomic and electronic structure of Ti substitution in Ca3Co4O9en_US
dc.typeArticleen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record