Defects wrongly modelled as inversion: The case of ZnAl2O4 spinels

Research output: Contribution to conferencePosterResearch

Point defects in spinel compounds have a significant influence on the physical properties, and they are therefore highly useful for modifying the properties of the materials. While simplified models may reasonably describe experimental data, the inability to model the full complexity of the defects can lead to erroneous structural trends. With a commonplace assumption that inversion of the cations are the only contributing defect, most research in this area relies on a single characterization technique. Taking a multi-technique approach shows why a single technique approach is insufficient for accurately modeling the contribution from point defects in spinel compounds. By using ZnAl2O4 as a benchmark material, our multi-technique structural investigation clearly shows that the current cation inversion model is inaccurate, and instead the nature of the ZnAl2O4 spinel structure include several synthesis dependent point defects. Based on a comprehensive parameterstudy of ZnAl2O4, which was synthesized using four different techniques, and combined with various post treatments, we suggest a way forward for systematically incorporating defects in the spinel structure.
Original languageEnglish
Publication year20 Aug 2019
Publication statusPublished - 20 Aug 2019
Eventeuropean crystallographic meeting - Wien, Austria
Duration: 18 Aug 201924 Aug 2019

Conference

Conferenceeuropean crystallographic meeting
CountryAustria
CityWien
Period18/08/201924/08/2019

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ID: 163948938