A cascade of magnetic phase transitions and a 1/3-magnetization plateau in selenite–selenate Co3(SeO3)(SeO4)(OH)2 with kagomé-like Co2+ ion layer arrangements: the importance of identifying a correct spin lattice

Murtazoev, A.F.; Berdonosov, P.S.; Lyssenko, K.A.; Dolgikh, V.A.; Geidorf, M.Y.; Volkova, O.S.; Koo, H.J.; Whangbo, M.H.; Vasiliev, A.N.

Авторы: Murtazoev A.F., Berdonosov P.S., Lyssenko K.A., Dolgikh V.A., Geidorf M.Y., Volkova O.S., Koo H.J., Whangbo M.H., Vasiliev A.N.
Журнал: Dalton Transactions
Том: 52
Год издания: 2023
Издательство: Royal Society of Chemistry
Местоположение издательства: United Kingdom
Первая страница: 9664
Последняя страница: 9672
DOI: 10.1039/d3dt01620j
Аннотация: We prepared a new compound, Co3(SeO3)(SeO4)(OH)2, having layers in a kagomé-like arrangement of Co2+ (spin S = 3/2) ions. This phase crystallizes in the orthorhombic space group Pnma (62) with unit cell parameters a = 11.225(9) Å, b = 6.466(7) Å and c = 11.530(20) Å. Its layers, parallel to the ab-plane, are made up of Co1O5 square pyramids and Co2O6 and Co3O6 octahedra. As the temperature is lowered, Co3(SeO3)(SeO4)(OH)2 undergoes three successive magnetic transitions at 27.5, 19.4 and 8.1 K, and the magnetization of Co3(SeO3)(SeO4)(OH)2 measured at 2.4 K exhibits a 1/3-magnetization plateau between 7.8 and 19.9 T. The H–T magnetic phase diagram constructed for Co3(SeO3)(SeO4)(OH)2 from ac and dc magnetic susceptibility, specific heat and magnetization measurements contains three magnetic phases I, II and III. Phase I is antiferromagnetic, while phases II and III are ferrimagnetic and responsible for the 1/3-magnetization plateau. To interpret these complex magnetic properties, we identified the correct spin lattice for Co3(SeO3)(SeO4)(OH)2 by evaluating its intralayer and interlayer spin exchanges based on spin-polarized DFT+U calculations.
Добавил в систему: Бердоносов Петр Сергеевич

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A cascade of magnetic phase transitions and a 1/3-magnetization plateau in selenite–selenate Co3(SeO3)(SeO4)(OH)2 with kagomé-like Co2+ ion layer arrangements: the importance of identifying a correct spin latticeстатья

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