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NEW GEOMETRY AND PROPERTIES OF ADVANCED SUPERIONIC CONDUCTORS

1 ANDREEVA Alexandra
Co-authors:
1 DESPOTULI Alexandr
Institution:
1 Institute of microelectronics technology and high purity materials Russian Academy of Sciences, Chernogolovka, Russia, andreeva@ipmt-hpm.ac.ru
Conference:
11th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 16th - 18th 2019
Proceedings:
Proceedings 11th International Conference on Nanomaterials - Research & Application
Pages:
48-53
ISBN:
978-80-87294-95-6
ISSN:
2694-930X
DOI:
https://doi.org/10.37904/nanocon.2019.8502
Published:
1st April 2020
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
782 views / 411 downloads
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Abstract

Advanced superionic conductors (AdSICs) have the best ion-transport properties. These properties are determined by the AdSIC crystal structure that is close to optimal for fast ionic transport (FIT). The structure represents a close-packed cubic lattice of motionless ions penetrated by a 3D-network of uniform FIT-tunnels in which mobile ions move by hopping mechanism. The descriptors, based on a symmetry group of an immobile rigid sublattice and a local symmetry interconnected interstitial sites through which mobile ions move, are revealed. A new geometry and packing of FIT-tunnels inside the unit cell are presented. Some unusual properties of AdSICs are discussed. It is shown that the specific crystal structure of AdSICs may serve as a basis for searching and 3-D designing new solid ionic materials with high ion-transport properties.

Keywords: Advanced superionic conductors, structural descriptors, tunnels of fast ionic transport, universal dynamic response, 3-D structure design

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