Role of fuel on cation disorder in magnesium aluminate (MgAl2O4) spinel prepared by combustion synthesis

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dc.contributor.authorDwibedi, Den_AU
dc.contributor.authorAvdeev, Men_AU
dc.contributor.authorBarpanda, Pen_AU
dc.date.accessioned2021-03-11T00:07:52Zen_AU
dc.date.available2021-03-11T00:07:52Zen_AU
dc.date.issued2015-06-19en_AU
dc.date.statistics2021-03-09en_AU
dc.description.abstractMagnesium aluminate spinel (MgAl2O4) forms an interesting system having tetrahedral and octahedral voids filled with near similar sized divalent Mg2+ and trivalent Al3+ cations. Structural disorder (e.g., Mg–Al antisite defects) can be tuned by synthetic conditions. This study reports the evolution of Mg/Al disorder in MgAl2O4 prepared by combustion synthesis using different types of fuels. The effect of nature of fuel and the final calcination temperature (600°C–900°C for 9 h) on degree of cation ordering has been investigated combining powder X‐ray (XRD) and neutron (NPD) diffraction. The results indicate very high degree of inversion in the samples crystallized at low annealing temperature, which on further annealing reduces toward the thermodynamically stable values. Raman spectroscopy, probing MgO4, and AlO4 tetrahedral bonds, confirmed the results at a local level. © 2015 The American Ceramic Societyen_AU
dc.identifier.citationDwibedi, D., Avdeev, M., & Barpanda, P. (2015). Role of fuel on cation disorder in magnesium aluminate (MgAl2O4) spinel prepared by combustion synthesis. Journal of the American Ceramic Society, 98(9), 2908-2913. doi:10.1111/jace.13705en_AU
dc.identifier.issn1551-2916en_AU
dc.identifier.issue9en_AU
dc.identifier.journaltitleJournal of the American Ceramic Societyen_AU
dc.identifier.pagination2908-2913en_AU
dc.identifier.urihttps://doi.org/10.1111/jace.13705en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10523en_AU
dc.identifier.volume98en_AU
dc.language.isoenen_AU
dc.publisherAmerican Ceramic Societyen_AU
dc.subjectMagnesiumen_AU
dc.subjectRaman spectroscopyen_AU
dc.subjectX-ray diffractionen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectCrystallizationen_AU
dc.subjectAnnealingen_AU
dc.subjectHeat treatmentsen_AU
dc.subjectCombustionen_AU
dc.titleRole of fuel on cation disorder in magnesium aluminate (MgAl2O4) spinel prepared by combustion synthesisen_AU
dc.typeJournal Articleen_AU
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