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Microstructural Studies of Ferroelectric Bi2VO5.5 Thin Films With LaNiO3 Electrodes

Published online by Cambridge University Press:  15 February 2011

D. Prasad Beesabathina ,
L. Salmanca-Riba ,
M. S. Hegde ,
K. M. Satyalakshmi ,
K. V. R. Prasad  and
K. B. R. Varma
D. Prasad Beesabathina
Affiliation:
Center for Superconductivity Research and Materials and Nuclear Engineering Department, University of Maryland, College Prak, MD 20742.
L. Salmanca-Riba
Affiliation:
Center for Superconductivity Research and Materials and Nuclear Engineering Department, University of Maryland, College Prak, MD 20742.
M. S. Hegde
Affiliation:
Indian Institute of Science, Bangalore, India 560012.
K. M. Satyalakshmi
Affiliation:
Indian Institute of Science, Bangalore, India 560012.
K. V. R. Prasad
Affiliation:
Indian Institute of Science, Bangalore, India 560012.
K. B. R. Varma
Affiliation:
Indian Institute of Science, Bangalore, India 560012.
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Abstract

Thin films of Bi2VO5.5 (BVO), a vanadium analog of the n = I member of the Aurivillius family, have been prepared by pulsed laser deposition. The BVO films grow along the [001] direction on LaNiO3(LNO) and YBa2Cu3O7 (YBCO) electrode buffer layers on LaA- IO3(LAO) substrates as obtained from X-ray diffraction studies. The microstructure of the films and of the interfaces within the film and between the film and the substrate were characterized using transmission electron microscopy. The in-plane epitaxial relationship of the rhombohedral LNO on perovskite LAO was [100] LNO // [100] LAO and [001] LNO // [001] LAO. High resolution lattice images showed a sharp interface between LNO and LAO. However, the LNO film is twinned with a preferred orientation along the growth direction. The BVO layer is single crystalline on both LNO/LAO and YBCO/LAO with the caxis parallel to the growth direction except for a thin layer of about 400 Å at the interface which is polycrystalline.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 341: Symposium F – Epitaxial Oxide Thin Films and Heterostructures , 1994 , 399
Copyright
Copyright © Materials Research Society 1994

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