Oxygen level dependent lattice dynamics of Na0.73CoO2-δ.

dc.contributor.authorTsai, PHen_AU
dc.contributor.authorDonelson, Ren_AU
dc.contributor.authorTan, TTen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorYu, DHen_AU
dc.contributor.authorStrassle, Ten_AU
dc.contributor.authorLi, Sen_AU
dc.date.accessioned2011-01-05T05:07:56Zen_AU
dc.date.available2011-01-05T05:07:56Zen_AU
dc.date.issued2010-11-22en_AU
dc.date.statistics2010-12-16en_AU
dc.description.abstractThe optical and acoustic phonon branches of Na0.73CoO2-δ have been determined using Raman scattering and inelastic neutron scatterings, and their correlation with phononic thermal conductivity kph in terms of oxygen-vacancy concentration δ was investigated. The experimentally observed phonon stiffening of the Raman-active E1g mode suggests that oxygen vacancies may help stabilize texturing of Na ions that gives rise to higher kph with increasing δ. The generalized phonon density of states characterized using inelastic neutron scattering exhibits subtle stiffening of acoustic and optical phonons with δ, which appears to be responsible for the variations in kph(T) profile in the temperature range 323−923 K. © 2010, American Chemical Societyen_AU
dc.identifier.citationTsai, P. H., Donelson, R., Tan, T. T., Avdeev, M., Yu, D. H., Strassle, T., & Li, S. (2010). Oxygen level dependent lattice dynamics of Na0.73CoO2-δ. Journal of Physical Chemistry C, 114(49), 21848-21850. doi:10.1021/jp107774yen_AU
dc.identifier.govdoc3105en_AU
dc.identifier.issn1932-7447en_AU
dc.identifier.issue49en_AU
dc.identifier.journaltitleJournal of Physical Chemistry Cen_AU
dc.identifier.pagination21848-21850en_AU
dc.identifier.urihttp://dx.doi.org/10.1021/jp107774yen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/2904en_AU
dc.identifier.volume114en_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectAcousticsen_AU
dc.subjectLattice parametersen_AU
dc.subjectOxygenen_AU
dc.subjectScatteringen_AU
dc.subjectThermal conductivityen_AU
dc.subjectPhononsen_AU
dc.titleOxygen level dependent lattice dynamics of Na0.73CoO2-δ.en_AU
dc.typeJournal Articleen_AU
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