Tracer diffusion of oxygen in YBa sub 2 Cu sub 3 O sub 7 minus. delta

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.8852· OSTI ID:5212907

Rothman, S J; Routbort, J L ^[1]; Baker, J E ^[2]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
2. Center for Microanalysis of Materials, University of Illinois, Urbana, Illinois 61801 (USA)

The tracer diffusion of {sup 18}O in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} has been measured at temperatures from 300 to 850 {degree}C at an oxygen partial pressure of 1{times}10{sup 5} Pa, and as a function of oxygen partial pressure at 600 {degree}C. The diffusion of oxygen is strongly anisotropic. The faster component, associated with diffusion in the {ital ab} plane, has an activation energy of 0.97{plus minus}0.03 eV. There is no break in the Arrhenius plot at the orthorhombic-tetragonal transformation temperature. The diffusion coefficient is not a strong function of oxygen partial pressure from 3{times}10{sup 3} to 1{times}10{sup 5} Pa at 600{degree}C. The results are compared to the predictions of the various theories of diffusion in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5212907
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:13; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ACTIVATION ENERGY
ALKALINE EARTH METAL COMPOUNDS
ANISOTROPY
ATOM TRANSPORT
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIFFUSION
ENERGY
EVEN-EVEN NUCLEI
HIGH TEMPERATURE
ISOTOPE APPLICATIONS
ISOTOPES
LIGHT NUCLEI
NEUTRAL-PARTICLE TRANSPORT
NUCLEI
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN 18
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
PHASE TRANSFORMATIONS
RADIATION TRANSPORT
STABLE ISOTOPES
TETRAGONAL LATTICES
TRACER TECHNIQUES
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES