Site-selective oxygen-isotope substitution in YBa sub 2 Cu sub 3 O sub 7 minus. delta

Journal Article · Fri Nov 01 04:00:00 EST 1991 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.44.9556· OSTI ID:6188815

Morris, D E; Markelz, A G; Wei, J Y.T.; Hultgren, C T; Nickel, J H ^[1]; Hamilton, J C; McCarty, K F ^[2]

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1. Morris Research, 1918 University Avenue, Berkeley, California (USA)
2. Sandia National Laboratory, Livermore, California (USA)

We report selective substitution of oxygen-18 and oxygen-16 isotopes into the inequivalent oxygen lattice sites in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}}. The technique involves gas-phase diffusion and exploits the site dependence of diffusion rates. The CuO{sub 2}-plane (O(2),O(3)) sites of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} can be filled with {sup 18}O while the apical (O(4)) and CuO-chain sites (O(1)) contain {sup 16}O (the opposite distribution can also be made). The site-selective isotope occupation has been confirmed by Raman spectroscopy. Our method will permit experiments to determine the contributions of the different oxygen sites to the isotope effect, in order to locate the pairing interaction within the unit cell.

• OSTI ID: 6188815
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 44:17; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DIFFUSION
EVEN-EVEN NUCLEI
HIGH-TC SUPERCONDUCTORS
ISOTOPE EFFECTS
ISOTOPES
LASER SPECTROSCOPY
LIGHT NUCLEI
MINERALS
NUCLEI
ONE-DIMENSIONAL CALCULATIONS
OPTIMIZATION
OXIDE MINERALS
OXIDES
OXYGEN 16
OXYGEN 18
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
PEROVSKITE
PEROVSKITES
RAMAN SPECTROSCOPY
SPECTROSCOPY
STABLE ISOTOPES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TWO-DIMENSIONAL CALCULATIONS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES