Investigation of cation-deficient quaternary thiospinels: single crystal study of Ag1.4Cr1.47Sn2.53S8期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Investigation of cation-deficient quaternary thiospinels: single crystal study of Ag_1.4Cr_1.47Sn_2.53S₈

Authors:	Gunjan Garg Shalabh Gupta Kandalam V Ramanujachary Samuel E Lofland Ashok K Ganguli

Affiliation:	^aDepartment of Chemistry, Indian Institute of Technology, Hauz Khas New Delhi 110016, India ^bDepartment of Chemistry and Biochemistry, Rowan University, Glassboro, NJ 08028, USA ^cDepartment of Physics and Astronomy, Rowan University, Glassboro, NJ 08028, USA

Abstract:	Single crystals of the quaternary thiospinel Ag_1.41(1)Cr_1.47(5)Sn_2.52(5)S₈ have been obtained by heating stoichiometric mixtures of elemental metals and sulfur at 750 °C. Structural analysis by single crystal X-ray diffraction shows that the above phase crystallizes in the space group with a = 10.4142(3) Å (R₁ = 0.0156 and wR₂ = 0.0416). The Ag-deficiency has been confirmed by solving the structures of crystals prepared in different batches and was observed to vary slightly between crystals. Magnetic studies on a monophasic powder sample with a nominal composition of Ag_1.63CrSn₃S₈ indicates anti-ferromagnetic ordering at low temperature. The high temperature susceptibility leads to a magnetic moment of 3.45 B.M. suggesting that chromium exists predominantly in a trivalent state.

Keywords:	Solid-state reaction Crystal and magnetic structure Magnetic material Magnetic measurements
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