Unique hyper-kagome atomic order in geometrically frustrated iridium spinel-like structures
- Authors: Talanov M.V.1, Talanov V.M.2, Shirokov V.B.3,4
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Affiliations:
- Southern Federal University, Research Institute of Physics
- Platov South-Russian State Polytechnic University
- Southern Federal University, Faculty of Physics
- Southern Scientific Center of the Russian Academy of Sciences
- Issue: Vol 66, No 10 (2017)
- Pages: 1719-1727
- Section: Reviews
- URL: https://journals.rcsi.science/1066-5285/article/view/241390
- DOI: https://doi.org/10.1007/s11172-017-1948-8
- ID: 241390
Cite item
Abstract
The review briefly outlines the results of authors’ theoretical research into unique hyperkagome atomic and orbital order in geometrically frustrated iridium spinel-like structures. The structural mechanism of formation of the hyper-kagome atomic order is established. It is shown that closed loops of Ir—Ir bonds represent a fundamental feature of the iridium spinel-like structures. Each loop consists of ten atoms, thus being a decagon. We assume that decagons are responsible for abnormal chemical and physical properties of crystals. A prediction is made of structural types of crystals in which the hyper-kagome atomic order can exist.
About the authors
M. V. Talanov
Southern Federal University, Research Institute of Physics
Email: valtalanov@mail.ru
Russian Federation, 194 prosp. Stachki, Rostov-on-Don, 344090
V. M. Talanov
Platov South-Russian State Polytechnic University
Author for correspondence.
Email: valtalanov@mail.ru
Russian Federation, 132 ul. Prosveshcheniya, Novocherkassk, 346400
V. B. Shirokov
Southern Federal University, Faculty of Physics; Southern Scientific Center of the Russian Academy of Sciences
Email: valtalanov@mail.ru
Russian Federation, 5 ul. Zorge, Rostov-on-Don, 344090; 41 ul. Chekhova, Rostov-on-Don, 344006