Growth of YBa2Cu3O7/CeO2/Al2O 3 heteroepitaxial films by aerosol MOCVD

K. Fröhlich, D. Machajdík, I. Vávra, J. Šouc, A. Rosová, A. Figueras, F. Weiss, K. H. Dahmen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have prepared YBa2Cu3O7 thin superconducting films on (1102) Al2O3 substrate with CeO2 buffer layer using an aerosol MOCVD process. Texture analysis using X-ray diffraction showed a high degree of epitaxial character of both YBa2Cu3O7 and CeO2 films. Study of the microstructure of the YBa2Cu3O7 layer and YBa2Cu3O7/CeO2 and CeO2/Al2O3 interfaces by transmission electron microscopy revealed relaxation of the CeO2 and YBa2Cu3O7 layers. The films exhibited a critical temperature Tc(R=0)=84-88 K, resistivity at room temperature of 600 μΩ cm, a resistivity ratio ρ(300 K)(100 K) higher than 3 and critical current density up to 3x109 A cm-2 at T=77 K.

Original languageEnglish
Pages (from-to)284-287
Number of pages4
JournalJournal of Alloys and Compounds
Volume251
Issue number1-2
Publication statusPublished - 1 Apr 1997
Externally publishedYes

Fingerprint

Metallorganic chemical vapor deposition
Aerosols
Superconducting films
Buffer layers
X ray diffraction analysis
Textures
Transmission electron microscopy
Temperature
Microstructure
Substrates
barium copper yttrium oxide

Keywords

  • Heteroepitaxy
  • MOCVD
  • Superconductivity
  • Thin films

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

Fröhlich, K., Machajdík, D., Vávra, I., Šouc, J., Rosová, A., Figueras, A., ... Dahmen, K. H. (1997). Growth of YBa2Cu3O7/CeO2/Al2O 3 heteroepitaxial films by aerosol MOCVD. Journal of Alloys and Compounds, 251(1-2), 284-287.

Growth of YBa2Cu3O7/CeO2/Al2O 3 heteroepitaxial films by aerosol MOCVD. / Fröhlich, K.; Machajdík, D.; Vávra, I.; Šouc, J.; Rosová, A.; Figueras, A.; Weiss, F.; Dahmen, K. H.

In: Journal of Alloys and Compounds, Vol. 251, No. 1-2, 01.04.1997, p. 284-287.

Research output: Contribution to journalArticle

Fröhlich, K, Machajdík, D, Vávra, I, Šouc, J, Rosová, A, Figueras, A, Weiss, F & Dahmen, KH 1997, 'Growth of YBa2Cu3O7/CeO2/Al2O 3 heteroepitaxial films by aerosol MOCVD', Journal of Alloys and Compounds, vol. 251, no. 1-2, pp. 284-287.
Fröhlich K, Machajdík D, Vávra I, Šouc J, Rosová A, Figueras A et al. Growth of YBa2Cu3O7/CeO2/Al2O 3 heteroepitaxial films by aerosol MOCVD. Journal of Alloys and Compounds. 1997 Apr 1;251(1-2):284-287.
Fröhlich, K. ; Machajdík, D. ; Vávra, I. ; Šouc, J. ; Rosová, A. ; Figueras, A. ; Weiss, F. ; Dahmen, K. H. / Growth of YBa2Cu3O7/CeO2/Al2O 3 heteroepitaxial films by aerosol MOCVD. In: Journal of Alloys and Compounds. 1997 ; Vol. 251, No. 1-2. pp. 284-287.
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