Synthesis and crystal structure determination of the new olivine-type compound Mn_(2)Sn□Se_(4)

• C. Chacón ^[3] ; P. Delgado-Niño ^[1] ; G. E. Delgado ^[2]
  1. [1] Universidad Libre Colombia

     Universidad Libre Colombia

     Colombia

     
  2. [2] Universidad de Los Andes (Venezuela)

     Universidad de Los Andes (Venezuela)

     Venezuela

     
  3. [3] Centro de Tecnología para Aguas Profundas, Veracruz, México

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• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 66, Nº. 1, 2020, págs. 30-34
• Idioma: inglés
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• Resumen

  • The Mn_(2)Sn□Se_(4) compound, manganese tin selenide, 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) Å^(3) in the orthorhombic space group P nma (N◦ 62). This olivine structure can be described from a hexagonal close-packing of selenium atoms where manganese atoms occupy 1/2 of the octahedral sites while thin atoms lay in 1/8 of the tetrahedra.