Sol-gel Synthesis of LaAlO3; Epitaxial Growth of LaAlO3 Thin Films on SrTiO3(100)
- 1 April 1997
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 12 (4) , 1017-1021
- https://doi.org/10.1557/jmr.1997.0142
Abstract
A LaAlO3 precursor solution was prepared via an all alkoxide sol-gel route. The solution of lanthanum methoxyethoxide and aluminum methoxyethoxide in 2-methoxyethanol was prepared via ligand exchange starting from lanthanum isopropoxide and aluminum sec-butoxide and was used to make both LaAlO3 powders and films. Complete hydrolysis of the solution formed a gel that yielded well-crystallized LaAlO3 powders when fired in air at 800 °C. A partially hydrolyzed solution was spun-cast on SrTiO3 (100) single crystal substrates. Epitaxial films of LaAlO3 were subsequently formed during pyrolysis in O2 at 800 °C in a rapid thermal annealing furnace for a total of 8 min. The films were strongly c-axis oriented, verified by x-ray rocking curve results from the (003) plane with full-width at half-maximum (FWHM) = 0.87°, and had good in-plane texture shown by a φ scan of the (202) plane with FWHM = 1.07°.Keywords
This publication has 18 references indexed in Scilit:
- Optimization of Jc of YBCO thin films prepared by photo-assisted MOCVD through statistical robust designPhysica C: Superconductivity and its Applications, 1995
- Growth of Highly Oriented TlBa2Ca2Cu3O9—y Superconducting Films on Ag Substrates Using a Dip‐Coated Barium Calcium Copper Oxide Sol—Gel PrecursorJournal of the American Ceramic Society, 1995
- Sol-gel processing of oriented SrTiO3 thin filmsMaterials Letters, 1995
- Preparation of lanthanum aluminate thin films by a sol-gel procedure using alkoxide precursorsMaterials Research Bulletin, 1994
- Synthesis of YBa2Cu3O7−x by sol-gel route formation of YBaCuO oxycarbonate intermediatePhysica C: Superconductivity and its Applications, 1993
- Physical characterization and vibrational spectroscopy of Bi(Pb) cuprate 2212 ceramics prepared by sol-gelPhysica C: Superconductivity and its Applications, 1992
- Synthesis of bimetallic barium titanium alkoxides as precursors for electrical ceramics. Molecular structure of the new barium titanium oxide alkoxide Ba4Ti13(.mu.3-O)12(.mu.5-O)6(.mu.1-.eta.1-OCH2CH2OCH3)12(.mu.1,.mu.3-.eta.2-OCH2CH2OCH3)12Inorganic Chemistry, 1991
- Y-Ba-Cu-O Superconducting Films with High Jc Values by MOCVD using Ba-Addition ProductsJapanese Journal of Applied Physics, 1990
- Superconducting transport properties of grain boundaries in bicrystalsPhysical Review B, 1990
- Orientation Dependence of Grain-Boundary Critical Currents inBicrystalsPhysical Review Letters, 1988