Graduate School in Nonlinear Science

Sponsored by The Danish ResearchAgency

MIDIT                              OFD                          CATS
Modelling, Nonlinear Dynamics      Optics and Fluid Dynamics    Chaos and Turbulence Studies
and Irreversible Thermodynamics    Risø National Laboratory     Niels Bohr Institute and
Technical University of Denmark    Building 128                 Department of Chemistry
Building 321                       P.O. Box 49                  University of Copenhagen
DK-2800 Lyngby                     DK-4000 Roskilde             DK-2100 Copenhagen Ø
Denmark                            Denmark                      Denmark

Growth and domain structure of the YBCO thin films on the NdGaO3 substrates with surface normal inclined to [110]

Peter B. Mozhaev
Gennady A. Ovsyannikov
Philippe V. Komissinskii
Iosif M. Kotelyanskii
Ekaterina I. Raksha

Institute of Radio Engineering and Electronics RAS
Moscow, Russia

Igor K. Bdikin
Institute of Solid State Physics RAS
Chernogolovka, Moscow district, Russia

MIDIT-seminar 485

Thursday, March 29, 2001, 14.00 h
at IMM, Bldg. 305, Room 018, DTU

Abstract: Growth, crystal structure and the electrophysical properties of the epitaxial YBa2Cu3Ox (YBCO) thin films, deposited on the NdGaO3 (NGO) substrates with inclination of the surface normal from the [110] direction around the [001] axis with angle 5 to 26.6 , both with and without an epitaxial interlayer of CeO2, were studied. The orientation of the YBCO films is determined by the presence of symmetrically-equivalent directions in the substrate and the CeO2 interlayer; and by the film deposition rate. High deposition rate results in the [001] orientation of the YBCO thin film independently on the substrate or interlayer orientation. With increase of the inclination angle the twinning in the YBCO thin film is suppressed either in one or in both twin complexes.