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Fabrication of ceramics heterojunctions and layered cuprates by epitaxial layer-by-layer growth

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Volume
190
Identifiers
DOI: 10.1016/s0921-4534(05)80192-3

Abstract

Atomically regulated layers of perovskite oxides and alkaline earth cuprates were fabricated by laser MBE with the aid of RHEED intensity oscillations clearly observed during film growth. A ceramic superlattice composed of lattice-matched SrVO 3− x and SrTiO 3− y perovskites was prepared on an atomic scale by counting the number of RHEED oscillation. In situ RHEED and XPS analyses indicate that the interface between the laterally grown SrCuO 2− z epitaxial film and the SrTiO 3(0 0 1) substrate has a transition layer of about 1 nm thick, which apparently reflects an inhomogeneous growth manner at the initial stage.

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