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Buckle-layered decorated square kagome system KCu7BiO4(SO4)5статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Shvanskaya Larisa, Bushneva Tatiana, Chareev Dmitry, Taran Leonid, Mazurenko Vladimir, Streltsov Sergey, Vasiliev Alexander
- Журнал: Inorganic Chemistry
- Том: 65
- Номер: 1
- Год издания: 2026
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 303
- Последняя страница: 309
- DOI: 10.1021/acs.inorgchem.5c04285
- Аннотация: We report gas transport synthesis, crystal structure and magnetic properties of buckle-layered KCu7BiO4(SO4)5, which enriches few in number family of decorated square kagome systems consisting of rare mineral nabokoite KCu7TeO4(SO4)5Cl and synthetic Na6Cu7BiO4(PO4)4(Cl,OH)3. The title compound crystallizes in tetragonal space group P4/ncc with crystal lattice parameters a = 9.7731(1) and c = 20.4094(6) Å, Z = 4, and differs from nabokoite-like phases in the arrangement of Cu-centered polyhedra within the square kagome-like layer, as well as in their connection with decorating ions. KCu7BiO4(SO4)5 experiences a long-range order at Neel temperature TN = 12 K. In comparison with negative Weiss temperature Θ = − 219 K, it gives the frustration ratio F = |Θ|/TN ≥ 18. This very large value points to both fierce competition of antiferromagnetic exchange interactions and low dimensionality of the magnetic subsystem. Density functional theory calculations identify pathways of leading exchange interactions between Cu2+ ions within the buckled layers.
- Добавил в систему: Шванская Лариса Викторовна
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