An sup 17 O NMR study on oxygen exchange in YBa sub 2 Cu sub 3 O sub 7-x

Journal Article · Fri Jun 01 00:00:00 EDT 1990 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(90)90144-M· OSTI ID:6553080

Ramli, E; Ganja, E A; Reven, L; Oldfield, E; Rauchfuss, T B ^[1]

---

1. Univ. of Illinois, Urbana (USA)

This study evaluated the effect of reaction conditions on the extent and uniformity of {sup 17}O-labeled YBa{sub 2}Cu{sub 3}O{sub 7-x}. It was shown by {sup 17}O NMR spectroscopy and high-resolution SIMS that statistical {sup 17}O-enrichment is achieved at high temperatures by synthesis from oxides under an {sup 17}O{sub 2} atmosphere, or by direct {sup 17}O{sub 2} exchange of preformed YBa{sub 2}Cu{sub 3}O{sub 7-x}. Nonuniform enrichment can be achieved at low temperatures and with the use of short reaction times. An {sup 17}O{sub 2} circulator is described which proved useful for handling, purifying, and recovering the labeled oxygen.

• OSTI ID: 6553080
• Journal Information: Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 86:2; ISSN 0022-4596; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
ALKALINE EARTH METALS
BARIUM
CHALCOGENIDES
COMPOSITE MATERIALS
COPPER COMPOUNDS
COPPER OXIDES
DATA
DATA ANALYSIS
ELEMENTS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
INFORMATION
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MATERIALS
MEASURING INSTRUMENTS
MEASURING METHODS
METALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
OXIDES
OXYGEN 17
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
RESONANCE
STABLE ISOTOPES
SUPERCONDUCTING COMPOSITES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM