Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Manuel Morocoima"'
Autor:
Manuel Morocoima, Carlos Rincón, Gerzon E. Delgado, E. Moreno, Chrystian Power, E. Quintero, Miguel Quintero
Publikováno v:
physica status solidi (b). 256:1900076
Autor:
Manuel Morocoima, C. Rincón, E. Moreno, José A. Henao, Ch. Power, E. Quintero, Gerzon E. Delgado, Rafael Tovar, Mario A. Macías, M. Quintero
Publikováno v:
Solid State Communications. 151:947-951
In an attempt to resolve the crystal structure and the corresponding space group of the magnetic semiconductor Cu2FeSnS4, samples of this compound were studied by X-ray diffraction, differential thermal analysis, Raman scattering and magnetic suscept
Publikováno v:
Solid State Communications. 151:212-215
In order to resolve the crystal structure and the corresponding space group of the tetrahedrally coordinated II–III 2 –V I 4 defective semiconductor ZnGa 2 Se 4 , a study of the magnetic susceptibility of the alloy system Zn 1− z Mn z Ga 2 Se 4
Autor:
P. Grima, Manuel Morocoima, José A. Henao, L. Lara, F. Pineda, M. Quintero, Rafael Tovar, Mario A. Macías, E. Quintero, E. Moreno, P. Bocaranda
Publikováno v:
Journal of Physics and Chemistry of Solids. 71:993-998
Magnetic susceptibility χ measurements in the range from 2 to 300 K were carried out on samples of the Cu 2 FeSnSe 4 and Cu 2 MnSnSe 4 compounds. It was found that Cu 2 FeSnSe 4 was antiferromagnetic showing ideal Curie–Weiss behavior with a Neel
Autor:
B. Fernández, E. Calderón, P. Grima, Manuel Morocoima, L. Durán, C. Rincón, Miguel Quintero, E. Quintero
Publikováno v:
Physica B: Condensed Matter. 404:4095-4099
Optical absorption measurements were made in the temperature range 9–300 K on the chalcopyrite semiconductor compound AgGaSe 2 and the optical energy gap E G determined as a function of temperature T . In order to obtain the values of E G as a func
Autor:
P. Bocaranda, Jines E. Contreras, A.E. Mora, E. Quintero, J.L. Fernandez, José A. Henao, E. Moreno, Manuel Morocoima, Rafael Tovar, Mario A. Macías, M. Quintero, J. M. Briceño, Gerzon E. Delgado, P. Grima, R. Avila Godoy
Publikováno v:
Journal of Alloys and Compounds. 486:212-218
X-ray powder diffraction measurements and differential thermal analysis (DTA) were made on polycrystalline samples of the Cu2Cd1−zMnzSnSe4 and Cu2Cd1−zFezSnSe4 alloy systems. The diffraction patterns were used to show the equilibrium conditions a
Autor:
F. Pineda, Manuel Morocoima, José A. Henao, E. Quintero, P. Bocaranda, Rafael Tovar, E. Moreno, M. Quintero, P. Grima
Publikováno v:
Physica B: Condensed Matter. 404:1819-1825
Measurements of X-ray diffraction, differential thermal analysis (DTA) and of magnetic susceptibility χ, in the temperature range from 2 to 300 K, were carried out on polycrystalline samples of the Zn1−zMnzIn2Te4 alloy system. The X-ray diffractio
Autor:
José A. Henao, E. Quintero, P. Grima, M. Quintero, J. Pinilla, E. Moreno, Manuel Morocoima, P. Bocaranda
Publikováno v:
Journal of Alloys and Compounds. 471:16-20
Measurements of magnetic susceptibility χ have been made as a function of temperature in the range 2–300 K on polycrystalline samples of the Cu2Cd1−zMnzGeSe4 and Cu2Cd1−zFezGeSe4 alloy systems. Values of TN, the antiferromagnetic Neel temperat
Autor:
D. Ferrer, Gerzon E. Delgado, P. Grima, Manuel Morocoima, José A. Henao, E. Moreno, E. Quintero, M. Quintero, D. Caldera, P. Bocaranda
Publikováno v:
Journal of Alloys and Compounds. 469:4-8
X-ray powder diffraction measurements, at room temperature, and magnetic susceptibility χ measurements, in the temperature range from 2 to 300 K, were made on polycrystalline samples of Mn 2 GeTe 4 , Fe 2 GeTe 4 and Fe 2 SnSe 4 compounds, which woul
Autor:
Manuel Morocoima, E. Quintero, E. Calderón, J. M. Briceño, Pedro Grima-Gallardo, M. Quintero, Gerzon E. Delgado, H. Romero, S. Durán-Piña, M. Muñoz-Pinto, J.L. Fernandez
Publikováno v:
physica status solidi (a). 205:1552-1559
Polycrystalline samples of Cu3TaIn3Se7 and CuTa2InTe4 were synthesized by the usual melt and anneal technique. X-ray powder diffraction showed a single phase behavior for both samples with tetragonal symmetry and unit cell parameter values a = 5.794