Structure and phase composition of BiFeO3 : La films synthesized by chemical deposition from solutions

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 te...

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Bibliographic Details
Published in:	Physics of the solid state Vol. 54; no. 5; pp. 997 - 998
Main Authors:	Zhigalina, O. M., Khmelenin, D. N., Vorotilov, K. A., Kotova, N. M., Mazitov, A. A., Seregin, I. S., D’yakonova, N. B.
Format:	Journal Article
Language:	English
Published:	Dordrecht SP MAIK Nauka/Interperiodica 01-05-2012
Subjects:	Physics Physics and Astronomy Proceedings of the XIX All-Russian Conference on Physics of Ferroelectrics (VKS-XIX) Solid State Physics Transmission Electron Microscopy Study Chemical Deposition Platinum Layer Rhombohedral Phase Annealing Temperature Increase
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Summary:	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°C. It has been found that the temperature of the onset of crystallization with formation of the rhombohedral phase of BiFeO 3 is 500°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°C; in this case, the film remains single-phase to T = 700°C.
ISSN:	1063-7834 1090-6460
DOI:	10.1134/S1063783412050514