Listar Artículos Científicos por autor
Mostrando publicaciones 1-19 de 19
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AgSn[Bi1−xSbx]Se3: synthesis, structural characterization, and electrical behavior
Valencia-Gálvez, P.; Delgado, Daniela; López, María Luisa; Álvarez-Serrano, Inmaculada; Moris-López, Silvana; Galdámez, Antonio (2021)Herein, we report the synthesis, characterization, and electrical properties of lead-free AgSnm[Bi1−xSbx]Se2+m (m = 1, 2) selenides. Powder X-ray diffraction patterns and Rietveld refinement data revealed that these selenides ...
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Crystal structure and magnetic properties of titanium-based CuTi2 xMxS4 and CuCr2 xTixSe4 chalcospinels
Barahona-Huenchumil, Patricia; Galdámez, Antonio; López-Vergara, Fernanda; Manríquez, Victor; Peña, Octavio (2014)CuTi2 xMxS4 (M¼Fe, Mn, Co; x¼0.3, 0.5) and CuCr2 xTixSe4 (x¼0.3, 0.5, 0.7) chalcospinels were synthesized by conventional solid-state reactions. Their crystal structures were determined by single-crystal X-ray diffraction. ...
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Crystal structure of (Cu0.51In0.49)tet[Cr1.74In0.26]oct Se4 selenospinel, Cu0.51In0.75Cr1.74Se4
Moris-López, Silvana; Barahona-Huenchumil, Patricia; Galdámez, Antonio (2019)Cu0.51In0.75Cr1.74Se4, cubic, Fd3̄m (no. 227), a = 10.6506(13) Å, V = 1208.2 Å3, Z = 8, Rgt(F) = 0.0371, wRref(F2) = 0.0912, T = 293(2) K. CCDC no.: 1861215
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Crystal structure, Raman scattering and magnetic properties of CuCr2 xZrxSe4 and CuCr2 xSnxSe4 selenospinels
Barahona-Huenchumil, Patricia; Pinto, C.; Galdámez, Antonio; Peña, Octavio; Moris-López, Silvana (2018)Selenospinels, CuCr2 xMxSe4 (M = Zr and Sn), were synthesized via conventional solid-state reactions. The crystal structure of CuCr1.5Sn0.5Se4, CuCr1.7Sn0.3Se4, CuCr1.5Zr0.5Se4, and CuCr1.8Zr0.2Se4 were determined using ...
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(Cu)tet(Cr2–xSnx)octS4–ySey Spinels: Crystal structure, density functional theory calculations, and magnetic behavior
Moris-López, Silvana; Valencia-Gálvez, P.; Mejía-López, José; Peña, Octavio; Barahona-Huenchumil, Patricia; Galdámez, Antonio (2019)A new series of (Cu)tet[Cr2–xSnx]octS4–ySey compounds was prepared by solid-state reaction at high temperature. Determination of the crystal structures by single-crystal X-ray diffraction revealed that CuCr1.0Sn1.0S2.1Se1.9, ...
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Cu2Mn1xCoxSnS4: Novel kesterite type solid solutions
López-Vergara, Fernanda; Galdámez, Antonio; Manríquez, Victor; Barahona-Huenchumil, Patricia; Peña, Octavio (2013)A new family of Cu2Mn1xCoxSnS4 chalcogenides has been synthesized by conventional solid-state reactions at 850 1C. The reactions products were characterized by powder X-ray diffraction (XRD), energy-dispersive X-ray analysis ...
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Cu2Zn(Sn1−xSix)Se4: Structural characterization, vibrational and physical properties of cztse-derivatives
Valencia-Gálvez, P.; Barahona-Huenchumil, Patricia; Galdámez, Antonio; Moris-López, Silvana (2023)Herein, we report the structural characterization and vibrational and physical properties of Cu2ZnSn1−xSixSe4 solid solutions synthesized using the ceramic method. X-ray diffraction analysis and Rietveld analysis of the ...
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Effect of the selenium content in the optical properties of the kesteriteCu2 ZnSnS4-XSeX phases
López-Vergara, Fernanda; Galdámez, Antonio; Manríquez, Victor; Barahona-Huenchumil, Patricia (2016)Polycrystalline Cu2ZnSnS4-xSex (X=1, 2, 3) compounds were synthesized by conventional solid-state reactions. The samples were characterized by powder X-ray diffraction (XRD), energy-dispersive X-ray analysis (SEM-EDS), ...
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Electrical and optical properties of p-type Ag0.3Cu0.7InQ2 chalcopyrite semiconductors
Moris-López, Silvana; Manríquez, Victor; Barahona-Huenchumil, Patricia; Galdámez, Antonio; Valencia-Gálvez, P. (2018)We report the synthesis, characterization and electrical properties of Ag0.3Cu0.7InS2, Ag0.3Cu0.7InSe2 and Ag0.3Cu0.7InTe2. These solid solutions were synthesized via microwave-assisted solid-state reactions. Powder X-ray ...
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Magnetic properties and crystal structure of solid-solution Cu2MnxFe1−xSnS4 chalcogenides with stannite-type structure
Barahona-Huenchumil, Patricia; López-Vergara, Fernanda; Galdámez, Antonio; Manríquez, Victor; Peña, Octavio (2014)New solid solutions Cu2MnxFe1−xSnS4 were prepared by direct combination of the corresponding elements at 850 °C. The crystal structure of Cu2Mn0.4Fe0.6SnS4 was determined by single-crystal X-ray diffraction. This phase is ...
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Raman characterization of CuIrSnX4 normal-spinel systems
Barahona-Huenchumil, Patricia; Galdámez, Antonio; Valencia-Gálvez, P.; Moris-López, Silvana (2020)CuIrSnS4, CuIrSnSe4 and CuIrSnS2Se2 were synthetized by a solid-state reaction at 700 °C. Powder X-ray diffraction patterns were consistent with normal spinel-type structure. Scanning electron microscopy (SEM-EDS) images ...
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Structural characterization and dielectric properties of the solid solutions AgPb(Sb,Bi)S3
Galdámez, Antonio; López-Vergara, Fernanda; Barahona-Huenchumil, Patricia; Manríquez, Victor; Ávila, Ricardo E. (2012)The new solid solutions AgPbSb1−xBixS3 were prepared by solid state reactions. The phases were characterized by powder X-ray diffractions (XRD), scanning electron microscopy, and thermal analysis. The XRD patterns of ...
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Structural characterization and thermoelectric properties of Br-Doped AgSnm[Sb0.8Bi0.2]Te2+m Systems
Delgado, Daniela; Moris-López, Silvana; Valencia-Gálvez, P.; López, María Luisa; Álvarez-Serrano, Inmaculada; Blake, Graeme R.; Galdámez, Antonio (2023)Herein, we report the synthesis, structural and microstructural characterization, and thermoelectric properties of AgSnm[Sb0.8Bi0.2]Te2+m and Br-doped telluride systems. These compounds were prepared by solid-state reaction ...
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Synthesis and magnetic properties of chromium-based Cu(Cr2‑xTix )S4 thiospinels and their deficient structures Cu1‑yoy Cr2‑xTix S4 obtained by Copper extraction
Barahona-Huenchumil, Patricia; Galdámez, Antonio; López-Vergara, Fernanda; Manríquez, Victor; Peña, Octavio (2014)The crystalline structure of spinels is extremely flexible due to the presence of several sublattices in which the cations can be distributed and localized in different crystallographic sites depending on their sizes, ...
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Synthesis, x-ray diffraction, and raman spectroscopy of AgSnBiSe3 and AgSnBiSe2S systems
Moris-López, Silvana; Barahona-Huenchumil, Patricia; Valencia-Gálvez, P.; Galdámez, Antonio (2019)AgSnBiSe3 and AgSnBiSe2S were prepared by solid state reactions at 950 °C. The phases were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and Raman spectroscopy. The samples were ...
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Synthesis, x-ray difraction, and raman spectroscopy of AgSnBiSe3 AND AgSnBiSe2S systems
Moris-López, Silvana; Barahona-Huenchumil, Patricia; Valencia-Gálvez, P.; Galdámez, Antonio (2019) -
The crystal structure of 1-carboxy-2-(1H-indol-3- yl)-N,N,N-trimethylethan-1-ammonium chloride, C14H19N2O2Cl
García-Beltrán, Olimpo; Areche, Carlos; Galdámez, Antonio; Moris-López, Silvana (2020)C14H19N2O2Cl, tetragonal, P41 (no. 76), a = 6.8614(8) Å, c = 29.820(5) Å, V = 1403.9(4) Å3, Z = 4, Rgt(F) = 0.0311, wRref(F2) = 0.0549, T = 150(2) K. CCDC no.: 1484374
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The crystal structure of 5-nitronaphthoquinone, C10H5NO4
Barrientos, Claudio; Galdámez, Antonio; Moris-López, Silvana (2023)C10H5NO4, triclinic, P1 (no. 2), a = 9.2564(8) Å, b = 11.0464(9) Å,c = 14.8016(12) Å, α = 110.132(2)∘, β = 106.157(3)∘,γ 4.770(3) ∘, V = 1337.7(2) Å3, Z = 6, Rgt(F) = 0.0567,wRref (F2) = 0.1797, T = 296.15 K CCDC no.: 2262885
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Vibrational and optical properties of CZTS derivatives for photovoltaic applications: synthesis of Cu2ZnSn1-xGexS2Se2 compounds
Pinto, C.; López-Vergara, Fernanda; Galdámez, Antonio; Barahona-Huenchumil, Patricia; Moris-López, Silvana (2018)Herein, we report the vibrational and optical properties of new Cu2ZnSn1-xGexS2Se2 solid solutions prepared by isomorphic substitution of a fraction of Se by S in Cu2ZnSn1-xGexSe4 (CZTGeSe) through ceramic method. The Raman ...