Solid-state reactions in high-temperature superconductor-ceramic interfaces; Y-Ba-Cu-O on Al sub 2 O sub 3 versus yttria-stabilized ZrO sub 2 , and MgO

Journal Article · Thu Mar 01 04:00:00 EST 1990 · Journal of Applied Physics; (USA)

DOI:https://doi.org/10.1063/1.345506· OSTI ID:7171441

Fartash, A; Schuller, I K ^[1]; Pearson, J ^[2]

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1. University of California, San Diego, Physics Department B-019, La Jolla, California 92093 (USA)
2. Materials Science Division, Building 223, Argonne National Laboratory, Argonne, Illinois 60439 (USA)

We have prepared, using molecular-beam epitaxial techniques, superconducting Y-Ba-Cu-O films directly on Al{sub 2}O{sub 3}, yttria-stabilized ZrO{sub 2} (YSZ), and MgO without buffer layers. The structure and stoichiometry of the films on Al{sub 2}O{sub 3} are compared with those prepared on YSZ and MgO and found in large part determined by reactions with the substrates. The films on Al{sub 2}O{sub 3} consist of textured Y{sub 2}Ba{sub 4}Cu{sub 8}O{sub 20{minus}{ital x}} with superconducting onset at 80 K and zero resistance at 69 K, whereas on YSZ and MgO, YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital z}} films are formed. Auger electron depth profile spectroscopy in conjunction with structural and transport studies suggest that copper is depleted from the region near the Al{sub 2}O{sub 3} substrate.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7171441
• Journal Information: Journal of Applied Physics; (USA), Journal Name: Journal of Applied Physics; (USA) Vol. 67:5; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AUGER ELECTRON SPECTROSCOPY
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
ELECTRON SPECTROSCOPY
EPITAXY
FILMS
INTERFACES
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MOLECULAR BEAM EPITAXY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SPECTROSCOPY
STOICHIOMETRY
SUBSTRATES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
ULTRAHIGH VACUUM
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES