In-situ electron microscopy mapping of an order-disorder transition in a superionic conductor.
作者： Jaeyoung Heo , Daniel Dumett Torres , Progna Banerjee , Prashant K. Jain
DOI: 10.1038/S41467-019-09502-5
关键词:
摘要: Solid-solid phase transitions are processes ripe for the discovery of correlated atomic motion in crystals. Here, we monitor an order-disorder transition real-time nanoparticles super-ionic solid, Cu2-xSe. The use in-situ high-resolution transmission electron microscopy allows spatiotemporal evolution within a single nanoparticle to be monitored at level. high spatial resolution reveals that cation disorder is nucleated low co-ordination, energy sites where cationic vacancy layers intersect with surface facets. Time-dependent reciprocal lattice individual shows initiation accompanied by ~3% compression anionic lattice, establishing correlation between these two structural features lattice. insights gained here advance understanding transitions, ionic structure and transport, role surfaces transitions.
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