Layer-by-layer growth of thin films of the infinite-layer compounds SrCuO{sub 2} and CaCuO{sub 2}

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1994.1274· OSTI ID:518203

Gupta, A; Hussey, B W; Shaw, T M ^[1]

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1. IBM Thomas J. Watson Research Center, Yorktown Heights, NY (United States); and others

Epitaxial thin films of the infinite-layer compounds SrCuO{sub 2} and CaCuO{sub 2} have been grown in a layer-by-layer mode on (100) SrTiO{sub 3} substrates by pulsed laser deposition with in situ monitoring using reflection high-energy electron diffraction (RHEED). While the pseudomorphic growth of SrCuO{sub 2} thin films on lattice-matched SrTiO{sub 3} substrates has been reported previously, we have also successfully synthesized for the first time high quality thin films of the other end-member, CaCuO{sub 2}, which is an important structural component of a number of cuprate superconductors. The stabilization of the infinite-layer CaCuO{sub 2} has been achieved by using an epitaxial layer of the infinite-layer SrCuO{sub 2} film as a chemical template for the nucleation and growth of this highly metastable phase. The oxygen concentration used during deposition and subsequent cooldown of the films has been observed to result in subtle structural modifications in the infinite-layer compounds, with substantial influence on their transport properties.

• OSTI ID: 518203
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 112; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALCIUM OXIDES
COPPER OXIDES
CRYSTAL GROWTH
CRYSTAL STRUCTURE
ELECTRON DIFFRACTION
STRONTIUM OXIDES
STRONTIUM TITANATES
SUBSTRATES
SUPERCONDUCTORS
THIN FILMS