Advanced search
1 file | 826.79 KB

Aqueous CSD approach for the growth of novel, lattice-tuned LaxCe1-xOδ epitaxial layers

(2012) JOURNAL OF MATERIALS CHEMISTRY. 22(17). p.8476-8483
Author
Organization
Abstract
Lanthanum-cerium 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 (1-2 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.
Keywords
YBCO-COATED CONDUCTORS, CHEMICAL SOLUTION DEPOSITION, LA2ZR2O7 BUFFER LAYERS, LANTHANUM-CERIUM OXIDE, SOL-GEL TECHNIQUE, THIN-FILMS, X-RAY, SYSTEM, NANOPARTICLES, DIFFRACTION

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 826.79 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Narayanan, Vyshnavi, Petra Lommens, Klaartje De Buysser, Danny Vanpoucke, Ruben Hühne, Leopoldo Molina, Gustaaf Van Tendeloo, Pascal Van Der Voort, and Isabel Van Driessche. 2012. “Aqueous CSD Approach for the Growth of Novel, Lattice-tuned LaxCe1-xOδ Epitaxial Layers.” Journal of Materials Chemistry 22 (17): 8476–8483.
APA
Narayanan, Vyshnavi, Lommens, P., De Buysser, K., Vanpoucke, D., Hühne, R., Molina, L., Van Tendeloo, G., et al. (2012). Aqueous CSD approach for the growth of novel, lattice-tuned LaxCe1-xOδ epitaxial layers. JOURNAL OF MATERIALS CHEMISTRY, 22(17), 8476–8483.
Vancouver
1.
Narayanan V, Lommens P, De Buysser K, Vanpoucke D, Hühne R, Molina L, et al. Aqueous CSD approach for the growth of novel, lattice-tuned LaxCe1-xOδ epitaxial layers. JOURNAL OF MATERIALS CHEMISTRY. 2012;22(17):8476–83.
MLA
Narayanan, Vyshnavi, Petra Lommens, Klaartje De Buysser, et al. “Aqueous CSD Approach for the Growth of Novel, Lattice-tuned LaxCe1-xOδ Epitaxial Layers.” JOURNAL OF MATERIALS CHEMISTRY 22.17 (2012): 8476–8483. Print.
@article{2091541,
  abstract     = {Lanthanum-cerium 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 (1-2 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.},
  author       = {Narayanan, Vyshnavi and Lommens, Petra and De Buysser, Klaartje and Vanpoucke, Danny and H{\"u}hne, Ruben and Molina, Leopoldo and Van Tendeloo, Gustaaf and Van Der Voort, Pascal and Van Driessche, Isabel},
  issn         = {0959-9428},
  journal      = {JOURNAL OF MATERIALS CHEMISTRY},
  keyword      = {YBCO-COATED CONDUCTORS,CHEMICAL SOLUTION DEPOSITION,LA2ZR2O7 BUFFER LAYERS,LANTHANUM-CERIUM OXIDE,SOL-GEL TECHNIQUE,THIN-FILMS,X-RAY,SYSTEM,NANOPARTICLES,DIFFRACTION},
  language     = {eng},
  number       = {17},
  pages        = {8476--8483},
  title        = {Aqueous CSD approach for the growth of novel, lattice-tuned LaxCe1-xO\ensuremath{\delta} epitaxial layers},
  url          = {http://dx.doi.org/10.1039/c2jm15752g},
  volume       = {22},
  year         = {2012},
}

Altmetric
View in Altmetric
Web of Science
Times cited: