Reduced reactivity to air on HF-treated YBa/sub 2/Cu/sub 3/O/sub 7/minus//ital x// surfaces

Journal Article · Mon Jun 05 00:00:00 EDT 1989 · Appl. Phys. Lett.; (United States)

DOI:https://doi.org/10.1063/1.101532· OSTI ID:6225409

Vasquez, R P; Hunt, B D; Foote, M C

Treatment of YBa/sub 2/Cu/sub 3/O/sub 7/minus//ital x// films with a nonaqueous solution ofHF in absolute ethanol results in the formation of an oxyfluoride with relativeY:Ba:Cu concentrations of 1:4:3 on the surface, as determined by x-rayphotoelectron spectroscopy. The passivation properties of chemically treatedfilms were tested by monitoring the growth of the high binding energy O 1/ital s/peak, associated with nonsuperconducting surface species, as a function of airexposure time, for both HF-treated and untreated films. The native oxyfluorideis shown to reduce the reactivity of the superconductor to air.

• Research Organization: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109(US)
• OSTI ID: 6225409
• Journal Information: Appl. Phys. Lett.; (United States), Vol. 54:23
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
PASSIVATION
COPPER OXIDES
YTTRIUM OXIDES
ETHANOL
HYDROFLUORIC ACID
OXYFLUORIDES
PEROVSKITES
PHOTOELECTRON SPECTROSCOPY
SURFACE TREATMENTS
ALCOHOLS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRON SPECTROSCOPY
FLUORINE COMPOUNDS
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ACIDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360205* - Ceramics
Cermets
& Refractories- Corrosion & Erosion