Anhydrous copper tellurite disulfate Cu3TeO3(SO4)2 featuring the coexistence of spin singlets and a long-range antiferromagnetic order

Alisher F Murtazoev; Peter S Berdonosov; Konstantin A Lyssenko; Valery A Dolgikh; Zlata V Pchelkina; Konstantin V Zakharov; Michael Y Geidorf; Tatyana M Vasilchikova; Olga S Volkova; Alexander N Vasiliev

doi:10.1039/d3dt01290e

Anhydrous copper tellurite disulfate Cu₃TeO₃(SO₄)₂ featuring the coexistence of spin singlets and a long-range antiferromagnetic order

Dalton Trans. 2023 Jul 11;52(27):9247-9253. doi: 10.1039/d3dt01290e.

Authors

Alisher F Murtazoev^{1

2}, Peter S Berdonosov^{3

2}, Konstantin A Lyssenko^{3

4}, Valery A Dolgikh³, Zlata V Pchelkina^{5

6}, Konstantin V Zakharov⁷, Michael Y Geidorf^{2

7}, Tatyana M Vasilchikova^{2

7}, Olga S Volkova^{2

7}, Alexander N Vasiliev²

Affiliations

¹ Faculty of Materials Science, Lomonosov Moscow State University, Moscow 119991, Russia.
² Quantum Functional Materials Laboratory, National University of Science and Technology "MISiS", Moscow 119049, Russia.
³ Department of Inorganic Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia.
⁴ G.V. Plekhanov Russian University of Economics, Moscow, 117997, Russian Federation.
⁵ Institute of Metal Physics, UB RAS, Ekaterinburg 620990, Russia.
⁶ Department of Theoretical Physics and Applied Mathematics, Ural Federal University, Ekaterinburg 620002, Russia.
⁷ Department of Low Temperature Physics and Superconductivity, Faculty of Physics Lomonosov Moscow State University, Moscow 119991, Russia.

PMID: 37357965
DOI: 10.1039/d3dt01290e

Abstract

Anhydrous copper tellurite sulfate, Cu₃TeO₃(SO₄)₂, has been synthesized via vapor transport reactions in sealed silica glass ampoules. In measurements of magnetization M, magnetic susceptibility χ, specific heat C_p and X-band electron spin resonance, a long-range antiferromagnetic order at T_N = 13 K and an H-T magnetic phase diagram have been established. One-third of Cu²⁺ ions were found to form magnetically silent dimers. A peak in dielectric permittivity ε, which accompanies the Néel order, allows considering Cu₃TeO₃(SO₄)₂ as a magnetoelectric multiferroic material of the second type. Density functional theory calculations provided estimations of leading exchange interaction parameters.