Crystal Research and Technology
Cryst. Res. Technol. 41, 946 (2006) - Abstract -

Growth, structure and thermal properties of CuAlxGa1-xSe2 alloys

J. Castro, J. Naranjo, L. Durán, L. Meléndez, J. R. Fermin*, J. Cendros**, and C. A. Durante Rincón

Laboratorio de Ciencia de Materiales, Departamento de Física, Facultad Experimental de Ciencias, Universidad del Zulia, Sector Grano de Oro, Maracaibo, Venezuela
*Laboratorio de Materia Condensada, Departamento de Física, Facultad Experimental de Ciencias, Universidad del Zulia, Sector Grano de Oro, Maracaibo, Venezuela
**Centro de Investigación y Desarrollo Tecnológico de Ingeniería. Universidad Dr. Rafael Belloso Chacín, Edificio E, Avenida Goajira, Maracaibo, Venezuela

Keywords Cu-III-VI2 alloys, lattice parameters, DTA
PACS 61.10.Nz, 61.66.Dk, 64.70.Dv, 64.70.Kb
DOI 10.1002/crat.200610702

Ingots of the xGa1-xSe2 (0 ≤ x ≤ 1) alloys system were prepared by direct fusion of the stoichiometric mixture of the elements. The analysis of X-ray Powder Diffraction data showed the presence of one single phase with chalcopyrite tetragonal structure at room temperature for all the studied compositions. The lattice parameters, a and c, and the bond lengths were calculated. The phase transition temperatures were obtained by the onset method from Differential Thermal Analysis measurements performed on samples sealed in evacuated quartz ampoules. Fusion or transition enthalpies were determined from the area of the corresponding DTA peak.




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