Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/20263
Title: Fabrication and characterization of epitaxial Sr0.6Ba0.4Nb2O6/La0.7Sr0.3CoO3 heterostructures
Authors: Yum, TY
Mak, CL 
Wong, KH
Keywords: Epitaxial
Heterostructures
Pulsed laser deposition
Issue Date: 2006
Publisher: North-Holland
Source: Applied surface science, 2006, v. 252, no. 13 spec. iss., p. 4829-4833 How to cite?
Journal: Applied surface science 
Abstract: Epitaxial Sr0.6Ba0.4Nb2O6(SBN60)/La0.7Sr0.3CoO3 heterostructures were fabricated on LAO(0 0 1) substrates using pulsed laser deposition (PLD). Their structural properties were investigated by X-ray diffraction. The θ-2θ scans showed single crystalline Sr1-xBaxNb2O6 (SBN) and LaxSr1-xCoO3 (LSCO) layers with a 〈0 0 1〉 orientations perpendicular to the substrate plane. Phi scans on the (2 2 1) plane of SBN layer indicated that the films have two in-plane orientations with respect to the substrate. The SBN unit cells were rotated in the plane of the film by ±18.4° as well as ±45° with respect to the LAO substrate. This rotation was explained by considering the lattice matching between films and substrate, and minimization of electrostatic energy. Spectroellipsometry (SE) was used to characterize the depth profile, the microstructural inhomogeneities, including voids and surface roughness, refractive indices and extinction coefficients of the films.
URI: http://hdl.handle.net/10397/20263
ISSN: 0169-4332
EISSN: 1873-5584
DOI: 10.1016/j.apsusc.2005.07.162
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