Synthesis and crystal structure determination of the new olivine-type compound Mn2SnSe4

C. Chacón, P. Delgado-Niño, G.E. Delgado

Abstract


The Mn2SnSe4 compound was synthesized by the melt and annealing technique and its structure was refined by the Rietveld method using X-ray powder diffraction data. This compound crystallizes in the olivine-type structure with unit cell parameters a = 12.9028(2) Å, b = 7.9001(1) Å, c = 6.5015(1) Å, V = 662.72(2) Å3 in the orthorhombic space group Pnma (Nº 62). This olivine structure can be described from a hexagonal close-packing of selenium atoms where manganese atoms occupy ½ of the octahedral sites while thin atoms lay in ⅛ of the tetrahedra.


Keywords


Olivines; Chacogenides, Semiconductors; Chemical synthesis; Crystal structure; X-ray powder diffraction; Rietveld refinement

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DOI: https://doi.org/10.31349/RevMexFis.66.30

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Revista Mexicana de Física

ISSN: 2683-2224 (on line), 0035-001X (print)

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