Tracer diffusion of oxygen in Bi sub 2 Sr sub 2 CaCu sub 2 O sub x

Journal Article · Wed Apr 01 04:00:00 EST 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.45.7375· OSTI ID:7116030

Runde, M; Routbort, J L; Rothman, S J ^[1]; Goretta, K C ^[2]; Mundy, J N; Xu, X ^[1]; Baker, J E ^[3]

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1. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Materials and Components Technology Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Center for Microanalysis of Materials, University of Illinois, Urbana, Illinois 61801 (United States)

Tracer diffusion of {sup 18}O has been investigated in dense polycrystals and in the {ital c} direction in single crystals of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub {ital x}} between 300 and 700 {degree}C under one atmosphere of oxygen. Penetration profiles were determined by secondary-ion mass spectrometry. The diffusional anisotropy as measured by the ratio of the diffusion coefficients in the polycrystals ({ital D}=1.7{times}10{sup {minus}5} exp({minus}0.93 eV/{ital kT}) cm{sup 2}/s) to the diffusion coefficients parallel to the {ital c} axis of the single crystals ({ital D}=0.6 exp({minus}2.20 eV/{ital kT}) cm{sup 2}/s) is large and temperature dependent. The results suggest that diffusion in the {ital ab} plane and in the {ital c} direction takes place by different mechanisms.

• DOE Contract Number: W-31109-ENG-38; AC02-76ER01198
• OSTI ID: 7116030
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:13; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANISOTROPY
ATOM TRANSPORT
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTALS
DIFFUSION
EVEN-EVEN NUCLEI
HIGH-TC SUPERCONDUCTORS
ISOTOPES
LIGHT NUCLEI
MASS SPECTROSCOPY
NEUTRAL-PARTICLE TRANSPORT
NUCLEI
OXIDES
OXYGEN 18
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
POLYCRYSTALS
RADIATION TRANSPORT
SPECTROSCOPY
STABLE ISOTOPES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TEMPERATURE RANGE
TEMPERATURE RANGE 0400-1000 K
TRANSITION ELEMENT COMPOUNDS