Trigonal layered rosiaite-related antiferromagnet MnSnTeO6: ion-exchange preparation, structure and magnetic propertiesCCDC 1861765 for MnSnTeO6. For crystallographic data in CIF or other electronic format see DOI: 10.1039/c8dt03329c

• Main Authors: Nalbandyan, V. B, Evstigneeva, M. A, Vasilchikova, T. M, Bukhteev, K. Yu, Vasiliev, A. N, Zvereva, E. A
• Format: Journal Article
• Published: 23.10.2018
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/c8dt03329c

Ion-exchange treatment of Na 2 SnTeO 6 in molten salt mixtures resulted in rosiaite (PbSb 2 O 6 )-related MnSnTeO 6 . Its crystal structure was refined by the Rietveld method. Of the three possible models of Sn/Te distribution, the disordered model ( P 3&cmb.macr;1 m , a = 5.23093(11) Å, c = 4.62430(16) Å) was preferred based on bond distances. However, it is supposed that each individual (SnTeO 6 ) 2− layer retains complete ordering of the precursor and the apparent disorder is only due to stacking faults. Magnetic studies have shown that MnSnTeO 6 orders antiferromagnetically at Neél temperature T N = 9.8 K. The effective magnetic moment reasonably agrees with theoretical estimations assuming high-spin configuration of Mn 2+ ( 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. Ion-exchange treatment of Na 2 SnTeO 6 in molten salt mixtures resulted in rosiaite (PbSb 2 O 6 )-related MnSnTeO 6 .