Magnetic properties and crystal structure of solid‐solution Cu₂Mn_xFe_1−xSnS₄ chalcogenides with stannite‐type structure

Abstract

New solid solutions Cu 2 Mn x Fe 1Àx SnS 4 were prepared by direct combination of the corresponding elements at 850 8C. The crystal structure of Cu 2 Mn 0.4 Fe 0.6 SnS 4 was determined by single-crystal X-ray diffraction. This phase is described in the space group I 42m where each cation is tetrahedrally coordinated to four sulfur anions in a sphalerite-like arrangement. The XRD patterns of the solid solutions Cu 2 Mn x-Fe 1Àx SnS 4 were fully indexed in the space group I 42m and the values of the cell parameter for all phases obey the usual linear Vegard behavior. A progressive evolution of the magnetic moment in the paramagnetic state is observed when increasing the content of manganese. The negative values of the Curie-Weiss constant, u, indicate an antiferromagnetic (AF) behavior with AF interactions, weaker by more than one order of magnitude compared to other diluted magnetic semiconductors (DMSs) with zinc-blende or wurzite crystal structure.

Crystal structure and Raman scattering characterization of Cu2Fe1-xCoxSnS4 chalcogenide compounds

“…Additionally, we have reported on the synthesis, structural characterization and magnetic properties of Cu 2 Mn x Fe 1-x SnS 4 solid solutions [5]. In this work, we report the synthesis, crystallographic characterization, magnetic properties and vibrational analysis of new Cu 2 Fe 1-x Co x SnS 4 solid solutions obtained by isomorphic substitution of Fe +2 cation fractions with paramagnetic Co +2 cations.…”

Synthesis and Characterization of Cu2FeSnS4–Cu2MnSnS4 Solid Solution Microspheres

“…Most I 2 –II–IV–VI 4 compounds crystallize with a zinc-blende (ZB) or wurtzite (WS)-type superstructure, showing the tetragonal stannite (ZB-derived) or the orthorhombic wurtzite–stannite (WS-derived) structure [ 1 ]. The crystal structure of phases in the solid solution series of Cu 2 FeSnS 4 –Cu 2 MnSnS 4 has been thoroughly examined in a previous study [ 40 ]. The authors determined a continuous solid solution in the series.…”

Phase Equilibria in the MnGa2Tе4-MnIn2Tе4 System, Crystal Structure and Physical Properties of MnGaInTе4

“…[8][9][10][11] Among the chalcogenide materials, magnetic semiconductors of the type MB 2 X 4 (where M -Mn, Fe, Co, Ni; B -Ga, In; X -S, Se, Te) and phases on their basis are very promising for use in the manufacture of lasers, light modulators, photodetectors and other electronic devices controlled by a magnetic field. [12][13][14][15][16][17] Search and development of methods for the directed synthesis of new multicomponent phases and materials requires the study of phase equilibria in the relevant systems. 18,19 For this case, the systems including compounds which are structural or formula analogs are the greatest interest since the formation of broad areas of substitutional solid solutions can be expected in them.…”