First observation of the reversible O3↔P2 phase transition: crystal structure of the quenched high-temperature phase Na0.74Ni0.58Sb0.42O2

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dc.contributor.authorSmirnova, OAen_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorNalbandyan, VBen_AU
dc.contributor.authorKharton, VVen_AU
dc.contributor.authorMarques, FMBen_AU
dc.date.accessioned2021-01-28T06:05:29Zen_AU
dc.date.available2021-01-28T06:05:29Zen_AU
dc.date.issued2006-06-15en_AU
dc.date.statistics2021-01-12en_AU
dc.description.abstractAccording to thermal expansion data, O3-type phase NaxNi(1+x)/3Sb(2−x)/3O2 (x ≈ 0.8) undergoes at ca. 1270 K a reversible transition to a less dense form. The high-temperature phase quenched to liquid nitrogen belongs to P2 type, space group P63/mmc (no. 194), a = 3.0123 Å(2), c = 11.2264 Å(7) for x ≈ 0.74 at 298 K. The stabilisation of P2 versus O3-type structure at high temperatures seems to be due to alkali distribution over greater number of sites thus increasing entropy and decreasing Na+–Na+ repulsion. © 2005 Elsevier Ltd.en_AU
dc.identifier.citationSmirnova, O. A., Avdeev, M., Nalbandyan, V. B., Kharton, V. V., & Marques, F. M. B. (2006). First observation of the reversible O3↔P2 phase transition: crystal structure of the quenched high-temperature phase Na0.74Ni0.58Sb0.42O2. Materials Research Bulletin, 41(6), 1056-1062. doi:10.1016/j.materresbull.2005.11.014en_AU
dc.identifier.issn0025-5408en_AU
dc.identifier.issue6en_AU
dc.identifier.journaltitleMaterials Research Bulletinen_AU
dc.identifier.pagination1056-1062en_AU
dc.identifier.urihttps://doi.org/10.1016/j.materresbull.2005.11.014en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10278en_AU
dc.identifier.volume41en_AU
dc.language.isoenen_AU
dc.publisherElsevieren_AU
dc.subjectThermal expansionen_AU
dc.subjectCrystal structureen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectPhase transformationsen_AU
dc.subjectNitrogenen_AU
dc.subjectEntropyen_AU
dc.titleFirst observation of the reversible O3↔P2 phase transition: crystal structure of the quenched high-temperature phase Na0.74Ni0.58Sb0.42O2en_AU
dc.typeJournal Articleen_AU
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