Publication
Title
Aqueous CSD approach for the growth of novel, lattice-tuned $La_{x}Ce_{1-x}O_{\delta}$ epitaxial layers
Author
Abstract
 Lanthanumcerium oxide (LCO) films were deposited on Ni-5%W substrates by chemical solution deposition (CSD) from water-based precursors. LCO films containing different ratios of lanthanum and cerium ions (from CeO2 to La2Ce2O7) were prepared. The composition of the layers was optimized towards the formation of LCO buffer layers, lattice-matched with the superconducting YBa2Cu3Oy layer, useful for the development of coated conductors. Single, crack-free LCO layers with a thickness of up to 140 nm could be obtained in a single deposition step. The crystallinity and microstructure of these lattice-matched LCO layers were studied by X-ray diffraction techniques, RHEED and SEM. We find that only layers with thickness below 100 nm show a crystalline top surface although both thick and thin layers show good biaxial texture in XRD. On the most promising layers, AFM and (S)TEM were performed to further evaluate their morphology. The overall surface roughness varies between 3.9 and 7.5 nm, while the layers appear much more dense than the frequently used La2Zr2O7 (LZO) systems, showing much smaller nanovoids (12 nm) than the latter system. Their effective buffer layer action was studied using XPS. The thin LCO layers supported the growth of superconducting YBCO deposited using PLD methods.
Language
English
Source (journal)
Journal of materials chemistry / Royal Society of Chemistry [London] - Cambridge, 1991 - 2012
Publication
Cambridge : 2012
ISSN
0959-9428
1364-5501 [online]
Volume/pages
22:17(2012), p. 8476-8483
ISI
000302367500044
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
 Faculty/Department Research group Publication type Subject Affiliation Publications with a UAntwerp address
External links
 Web of Science
Record
 Identification Creation 10.04.2012 Last edited 14.06.2017 To cite this reference