Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Where the extraordinaries meet : a cascade of isosymmetrical superionic phase transitions and negative thermal expansion in a novel silver salt-inclusion borate halide. / Volkov, Sergey N.; Charkin, Dmitri O.; Arsentev, Maxim Yu; Aksenov, Sergey M.; Manelis, Lev S.; Krzhizhanovskaya, Maria G.; Sinelshchikova, Olga Yu; Ugolkov, Valery L.; Povolotskiy, Alexey V.; Shilovskikh, Vladimir V.; Antonov, Andrey A.; Bubnova, Rimma S.
в: CrystEngComm, Том 24, № 23, 18.05.2022, стр. 4174-4179.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Where the extraordinaries meet
T2 - a cascade of isosymmetrical superionic phase transitions and negative thermal expansion in a novel silver salt-inclusion borate halide
AU - Volkov, Sergey N.
AU - Charkin, Dmitri O.
AU - Arsentev, Maxim Yu
AU - Aksenov, Sergey M.
AU - Manelis, Lev S.
AU - Krzhizhanovskaya, Maria G.
AU - Sinelshchikova, Olga Yu
AU - Ugolkov, Valery L.
AU - Povolotskiy, Alexey V.
AU - Shilovskikh, Vladimir V.
AU - Antonov, Andrey A.
AU - Bubnova, Rimma S.
N1 - Publisher Copyright: © 2022 The Royal Society of Chemistry
PY - 2022/5/18
Y1 - 2022/5/18
N2 - A new silver iodide borate, Ag3B6O10I, is presented as a promising solid-state electrolyte with a δ ↔ γ ↔ β ↔ α cascade of the isosymmetric superionic phase transitions. Its crystal structure is composed of two sublattices, the “host” B-O covalent part from B6O13 6B:3Δ3□:[φ]<Δ2□>|<Δ2□>|<Δ2□>| corner-sharing hexaborate groups, and the “guest” Ag-I ionic part. The transitions are associated with structural re-arrangements of the latter with a stepwise “melting” of silver sublattice and give rise to an increase in conductivity to 0.005 S cm−1 at 99 °C. Exceptionally large room-temperature anharmonicity of silver vibration has been described. The migration of silver ions leads to negative thermal expansion (NTE) at 25-400 °C. The sodium analog, Na3B6O10I, with a “normal” perovskite-like structure was obtained. The structural diversity in the M3B6O10X family can be rationalized considering the difference in the ionic radii of X− anions and M+ cations.
AB - A new silver iodide borate, Ag3B6O10I, is presented as a promising solid-state electrolyte with a δ ↔ γ ↔ β ↔ α cascade of the isosymmetric superionic phase transitions. Its crystal structure is composed of two sublattices, the “host” B-O covalent part from B6O13 6B:3Δ3□:[φ]<Δ2□>|<Δ2□>|<Δ2□>| corner-sharing hexaborate groups, and the “guest” Ag-I ionic part. The transitions are associated with structural re-arrangements of the latter with a stepwise “melting” of silver sublattice and give rise to an increase in conductivity to 0.005 S cm−1 at 99 °C. Exceptionally large room-temperature anharmonicity of silver vibration has been described. The migration of silver ions leads to negative thermal expansion (NTE) at 25-400 °C. The sodium analog, Na3B6O10I, with a “normal” perovskite-like structure was obtained. The structural diversity in the M3B6O10X family can be rationalized considering the difference in the ionic radii of X− anions and M+ cations.
UR - http://www.scopus.com/inward/record.url?scp=85131825029&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/3d93b4a9-bb01-37bc-a2b1-664dc38d66d9/
U2 - 10.1039/d2ce00307d
DO - 10.1039/d2ce00307d
M3 - Article
AN - SCOPUS:85131825029
VL - 24
SP - 4174
EP - 4179
JO - CrystEngComm
JF - CrystEngComm
SN - 1466-8033
IS - 23
ER -
ID: 96581052