Projects per year
Abstract
The formation of nanoscale phases at grain boundaries in polycrystalline materials has attracted much attention, since it offers a route toward targeted and controlled design of interface properties. However, understanding structure-property relationships at these complex interfacial defects is hampered by the great challenge of accurately determining their atomic structure. Here, we combine advanced electron microscopy together with ab initio random structure searching to determine the atomic structure of an experimentally fabricated Σ13 (221) [11̅0] grain boundary in rutile TiO2. Through careful analysis of the atomic structure and complementary electron energy-loss spectroscopy analysis we identify the existence of a unique nanoscale phase at the grain boundary with striking similarities to the bulk anatase crystal structure. Our results show a path to embed nanoscale anatase into rutile TiO2 and showcase how the atomic structure of even complex internal interfaces can be accurately determined using a combined theoretical and experimental approach.
Original language | English |
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Pages (from-to) | 2745-2751 |
Number of pages | 7 |
Journal | Nano Letters |
Early online date | 31 Mar 2021 |
DOIs | |
Publication status | E-pub ahead of print - 31 Mar 2021 |
Bibliographical note
© 2021 American Chemical SocietyProjects
- 3 Finished
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High-throughput screening of polycrystalline solar absorbers (Ext.)
McKenna, K. P. (Principal investigator)
1/01/18 → 31/03/21
Project: Research project (funded) › Research
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Optimisation of charge carrier mobility in nanoporous metal oxide films
McKenna, K. P. (Principal investigator), Chechik, V. (Co-investigator), Douthwaite, R. E. (Co-investigator) & Lazarov, V. (Co-investigator)
1/01/17 → 31/10/20
Project: Research project (funded) › Research
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Non-equilibrium electron-ion dynamics in thin metal-oxide
McKenna, K. P. (Principal investigator)
1/01/13 → 30/04/18
Project: Research project (funded) › Research