Sequential imposed layer epitaxy of cuprate films

Conference · Tue Feb 01 00:00:00 EST 1994 · Journal of Superconductivity; (United States)

OSTI ID:7021280

Laguees, M; Tebbji, H; Mairet, V; Hatterer, C; Beuran, C F; Hass, N; Xu, X Z ^[1]; Cavellin, C D ^[2]

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1. CNRS UPR5, Paris (France)
2. Universite Paris (France)

Layer-by-layer epitaxy has been used to grow cuprate films since the discovery of high-Tc compounds. This deposition technique is in principle suitable for the growth of layered crystalline structures. However, the sequential deposition of atomic layer by atomic layer of cuprate compounds has presently not been optimized. Nevertheless, this deposition process is the only one which allows one to build artificial cell structures such as Bi[sub 2]Sr[sub 2]Ca[sub (n[minus]1)]Cu[sub n]O[sub y] with n as large as 10. This process will also be the best one to grow films of the so-called infinite layer phase compounds belonging to the Sr[sub 1[minus]x]Ca[sub x]CuO[sub 2] family, in order to improve the transport properties and the morphological properties of the cuprate films. When performed at high substrate temperature (typically more than 600[degree]C), the layer-by-layer epitaxy of cuprates exhibits usually 3D aggregate nucleation. Then the growth of the film no longer obeys the layer-by-layer sequence imposed during the deposition. We present here two experimental situations of true 2D sequential imposed layer epitaxy; the growth at 500[degree]C under atomic oxygen pressure of Bi[sub 2]Sr[sub 2]CuO[sub 6] and of Sr[sub 1[minus]x]Ca[sub y]CuO[sub 2] phases. 20 refs., 2 figs.

• OSTI ID: 7021280
• Report Number(s): CONF-930710-; CODEN: JOUSEH; TRN: 94-014497
• Journal Information: Journal of Superconductivity; (United States), Vol. 7:1; Conference: Physics and chemistry of molecular and oxide superconductors conference, Eugene, OR (United States), 27-31 Jul 1993; ISSN 0896-1107
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
CRYSTALLIZATION
MOLECULAR BEAM EPITAXY
X-RAY DIFFRACTION
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CERAMICS
CUPRATES
DEPOSITION
DIFFUSION
NUCLEATION
STRONTIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
COHERENT SCATTERING
COPPER COMPOUNDS
DIFFRACTION
EPITAXY
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
SCATTERING
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
360201* - Ceramics
Cermets
& Refractories- Preparation & Fabrication
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies