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Title: Epitaxial growth of BaZrO{sub 3} films on single crystal oxide substrates using sol-gel alkoxide precursors

Abstract

Epitaxial BaZrO{sub 3} (barium zirconium oxide) films were grown on single crystal substrates. A BaZrO{sub 3} precursor solution was prepared by sol-gel synthesis using an all-alkoxide route. The barium precursors were prepared by reacting barium metal with 2-methoxyethanol, and zirconium precursors were prepared by exchanging ligands between zirconium n-propoxide and 2-methoxyethanol. The resulting BaZrO{sub 3} precursor solution was partially hydrolyzed and spin-coated on sapphire (100), SrTiO{sub 3} (strontium titanium oxide) (100), and LaAlO{sub 3} (lanthanum aluminum oxide) (100) substrates. The films were post-annealed in oxygen at 800 C for 2 min in a rapid thermal annealer. The coating and the annealing procedures were repeated three times to obtain the desired thickness, 300 nm. X-ray diffraction studies showed the presence of a single (100) cube texture for BaZrO{sub 3} films on SrTiO{sub 3} and LaAlO{sub 3} substrates. The BaZrO{sub 3} films grown on sapphire had a random texture. The BaZrO{sub 3} films grown on SrTiO{sub 3} substrates had a sharp texture compared to that on LaAlO{sub 3} substrates. This may be due to the relatively smaller lattice mismatch between SrTiO{sub 3} and BaZrO{sub 3}.

Authors:
; ; ; ;  [1]
  1. Oak Ridge National Lab., TN (United States)
Publication Date:
Sponsoring Org.:
USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
OSTI Identifier:
586016
DOE Contract Number:  
AC05-96OR22464
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 32; Journal Issue: 12; Other Information: PBD: Dec 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BARIUM OXIDES; ZIRCONIUM OXIDES; CRYSTAL GROWTH; TEXTURE; EPITAXY; PRECURSOR; SUBSTRATES

Citation Formats

Paranthaman, M, Shoup, S S, Beach, D B, Williams, R K, and Specht, E D. Epitaxial growth of BaZrO{sub 3} films on single crystal oxide substrates using sol-gel alkoxide precursors. United States: N. p., 1997. Web. doi:10.1016/S0025-5408(97)00159-1.
Paranthaman, M, Shoup, S S, Beach, D B, Williams, R K, & Specht, E D. Epitaxial growth of BaZrO{sub 3} films on single crystal oxide substrates using sol-gel alkoxide precursors. United States. doi:10.1016/S0025-5408(97)00159-1.
Paranthaman, M, Shoup, S S, Beach, D B, Williams, R K, and Specht, E D. Mon . "Epitaxial growth of BaZrO{sub 3} films on single crystal oxide substrates using sol-gel alkoxide precursors". United States. doi:10.1016/S0025-5408(97)00159-1.
@article{osti_586016,
title = {Epitaxial growth of BaZrO{sub 3} films on single crystal oxide substrates using sol-gel alkoxide precursors},
author = {Paranthaman, M and Shoup, S S and Beach, D B and Williams, R K and Specht, E D},
abstractNote = {Epitaxial BaZrO{sub 3} (barium zirconium oxide) films were grown on single crystal substrates. A BaZrO{sub 3} precursor solution was prepared by sol-gel synthesis using an all-alkoxide route. The barium precursors were prepared by reacting barium metal with 2-methoxyethanol, and zirconium precursors were prepared by exchanging ligands between zirconium n-propoxide and 2-methoxyethanol. The resulting BaZrO{sub 3} precursor solution was partially hydrolyzed and spin-coated on sapphire (100), SrTiO{sub 3} (strontium titanium oxide) (100), and LaAlO{sub 3} (lanthanum aluminum oxide) (100) substrates. The films were post-annealed in oxygen at 800 C for 2 min in a rapid thermal annealer. The coating and the annealing procedures were repeated three times to obtain the desired thickness, 300 nm. X-ray diffraction studies showed the presence of a single (100) cube texture for BaZrO{sub 3} films on SrTiO{sub 3} and LaAlO{sub 3} substrates. The BaZrO{sub 3} films grown on sapphire had a random texture. The BaZrO{sub 3} films grown on SrTiO{sub 3} substrates had a sharp texture compared to that on LaAlO{sub 3} substrates. This may be due to the relatively smaller lattice mismatch between SrTiO{sub 3} and BaZrO{sub 3}.},
doi = {10.1016/S0025-5408(97)00159-1},
journal = {Materials Research Bulletin},
number = 12,
volume = 32,
place = {United States},
year = {1997},
month = {12}
}