Stoichiometry deviation in amorphous zirconium dioxide

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Amorphous zirconia (a-ZrO2) has been simulated using a synergistic combination of state-of-the-art methods: employing reverse Monte-Carlo, molecular dynamics and density functional theory together. This combination has enabled the complex chemistry of the amorphous system to be efficiently investigated. Notably, the a-ZrO2 system was observed to accommodate excess oxygen readily – through the formation of neutral peroxide (O22−) defects – a result that has implications not only in the a-ZrO2 system, but also in other systems employing network formers, intermediates and modifiers. The structure of the a-ZrO2 system was also determined to have edge-sharing characteristics similar to structures reported in the amorphous TeO2 system and other chalcogenide-containing glasses.
Original languageEnglish
Pages (from-to)16320-16327
JournalRSC Advances
Issue number29
Early online date24 May 2019
Publication statusPublished - 28 May 2019

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