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Sol-Gel Synthesis of Epitaxial Films of (Sr,Ba)Bi2(Nb,Ta)2O9 and Bi4Ti3O12 on [100] SrTiO3

Published online by Cambridge University Press:  10 February 2011

Jonathan S. Morrell ,
Ziling B. Xue ,
Eliot D. Specht  and
David B. Beach
Jonathan S. Morrell
Affiliation:
Department of Chemistry, University of Tennessee, Knoxville, TN
Ziling B. Xue
Affiliation:
Department of Chemistry, University of Tennessee, Knoxville, TN
Eliot D. Specht
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN
David B. Beach
Affiliation:
Chemical and Analytical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831–6197, beachdb@ornl.gov
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Abstract

An all-alkoxide sol-gel process utilizing methoxyethoxide complexes in 2-methoxyethanol was used to prepare epitaxial films of SrBi2Nb2O9, SrBi2Ta2O9, BaBi2Nb2O9, BaBi2Ta2O9, and Bi4Ti3O12 on [100] oriented SrTiO3 single crystals. Films were prepared by spin coating strontium titanate substrates with partially hydrolyzed alkoxide solutions and firing in air at 850 °C for 20 minutes. Out-of-plane orientation was confirmed by θ-2θ scans which showed only [002ℓ] reflections. In-plane orientation was determined by pole figures and phi-scans about the [105] plane in the case of the (Sr,Ba)Bi2(Nb,Ta)2O9 complexes and the [117] plane in the case of Bi4Ti3O12. Lattice constants and full-width at half-maximum (fwhm) values for both in-plane and out-of-plane reflections are reported.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 495: Symposium W – Chemical Aspects of Electronic Ceramics Processing , 1997 , 271
Copyright
Copyright © Materials Research Society 1998

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