X-ray diffraction analysis for thin films of PbTiO3-La2/3TiO3 prepared by the sol-gel method
1994 ◽
Vol 9
(8)
◽
pp. 2133-2137
◽
Thin films in the system (1 - x) PbTiO3−xLa2/3TiO3 were prepared by the sol-gel and dip-coating methods. Phases deposited in the films and the lattice parameters as a function of the composition were investigated by the x-ray diffraction method. The solid solutions with a perovskite structure were formed as a single phase with x up to 0.9. For the composition of x = 1.0, metastable La-Ti-O perovskite phase with a small amount of the impurity phase, La2Ti2O7, was obtained. Simulation of x-ray diffraction patterns based on the defect structure model shows that the structure of the La-Ti-O perovskite phase includes randomly distributed cation vacancies at the A-site, namely (La2/3□1/3)TiO3.
2011 ◽
Vol 110-116
◽
pp. 553-558
2011 ◽
Vol 44
(5)
◽
pp. 983-990
◽