gamma-Sodium gallate: a Rietveld refinement using X-ray powder diffraction.
Tetrahedrally coordinated oxides usually present polymorphism, but for NaGaO(2), only the beta polymorph has been reported. In this work, the synthesis and structural characterization of gamma-sodium gallate, gamma-NaGaO(2), are presented. The crystal structure belongs to the orthorhombic system, space group Pbca (No. 61), and has been characterized by a Rietveld refinement of the X-ray powder diffraction pattern. The structure is similar to those exhibited by the gamma phases of many tetrahedral oxides.
Villafuerte-Castrejón
María Elena
ME
Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, AP 70-360, 04510 México DF, Mexico. mevc@servidor.unam.mx
Bucio
Lauro
L
Sánchez-Arjona
Angel
A
Duque
Julio
J
Pomés
Ramón
R