This article is cited in 2 papers

Proceedings of the XIX All-Russian Conference on Physics of Ferroelectrics (VKS-XIX) (Moscow, Russia, June 19-23, 2011

Structure and phase composition of BiFeO$_3$ : La films synthesized by chemical deposition from solutions

O. M. Zhigalina, D. N. Khmelenin, K. A. Vorotilov, N. M. Kotova, A. A. Mazitov, I. S. Seregin, N. B. Dyakonova

Institute of Cristallography Russian Academy of Sciences, Moscow

Abstract: The transmission electron microscopy, energy-dispersive, and X-ray powder diffraction analyses have been used to study the changes in the structure and phase composition of lanthanum-doped BiFeO$_3$ and undoped BiFeO$_3$ thin films synthesized by chemical deposition from solutions and annealed in the temperature range 500–700$^\circ$C. It has been found that the temperature of the onset of crystallization with formation of the rhombohedral phase of BiFeO$_3$ is 500$^\circ$C. As the annealing temperature increases, the phase composition of the film is changed: the Bi$_{3.43}$Fe$_{0.57}$O$_6$ and Bi$_2$Fe$_4$O$_9$ phases are formed. The lanthanum doping increases the crystallization temperature to 550$^\circ$C; in this case, the film remains single-phase to $T$ = 700$^\circ$C.

 English version: Physics of the Solid State, 2012, 54:5, 997–998

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