Trigonal layered rosiaite-related antiferromagnet MnSnTeO6: ion-exchange preparation, structure and magnetic properties

V. B. Nalbandyan; M. A. Evstigneeva; T. M. Vasilchikova; K. Yu. Bukhteev; A. N. Vasiliev; E. A. Zvereva

doi:10.1039/C8DT03329C

Trigonal layered rosiaite-related antiferromagnet MnSnTeO₆: ion-exchange preparation, structure and magnetic properties†

V. B. Nalbandyan,

^a M. A. Evstigneeva,^a T. M. Vasilchikova,^b K. Yu. Bukhteev,^b A. N. Vasiliev^bcd and E. A. Zvereva

*^bc

Author affiliations

* Corresponding authors

^a Chemistry Faculty, Southern Federal University, 344090 Rostov-on-Don, Russia

^b Faculty of Physics, Moscow State University, 119991 Moscow, Russia
E-mail: zvereva@mig.phys.msu.ru

^c National Research South Ural State University, 454080 Chelyabinsk, Russia

^d National University of Science and Technology “MISiS”, 119049 Moscow, Russia

Abstract

Ion-exchange treatment of Na₂SnTeO₆ in molten salt mixtures resulted in rosiaite (PbSb₂O₆)-related MnSnTeO₆. Its crystal structure was refined by the Rietveld method. Of the three possible models of Sn/Te distribution, the disordered model (P [3 with combining macron] 1m, a = 5.23093(11) Å, c = 4.62430(16) Å) was preferred based on bond distances. However, it is supposed that each individual (SnTeO₆)²⁻ layer retains complete ordering of the precursor and the apparent disorder is only due to stacking faults. Magnetic studies have shown that MnSnTeO₆ orders antiferromagnetically at Neél temperature T_N = 9.8 K. The effective magnetic moment reasonably agrees with theoretical estimations assuming high-spin configuration of Mn²⁺ (S = 5/2). Electron spin resonance reveals spin dynamics in accordance with antiferromagnetic ordering. Moreover, critical broadening of ESR linewidth indicates the low-dimensional type of exchange interactions. Based on the temperature and field-dependent magnetization studies, the magnetic phase diagram of the new compound was constructed.

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Article information

DOI: https://doi.org/10.1039/C8DT03329C
Article type: Paper
Submitted: 14 Aug 2018
Accepted: 20 Sep 2018
First published: 21 Sep 2018

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Dalton Trans., 2018,47, 14760-14766

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Trigonal layered rosiaite-related antiferromagnet MnSnTeO₆: ion-exchange preparation, structure and magnetic properties

V. B. Nalbandyan, M. A. Evstigneeva, T. M. Vasilchikova, K. Yu. Bukhteev, A. N. Vasiliev and E. A. Zvereva, Dalton Trans., 2018, 47, 14760 DOI: 10.1039/C8DT03329C

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