Use of a Moessbauer marker in the analysis of the structure of YBa sub 2 Cu sub 3 O sub x ---based compounds

Journal Article · Wed Feb 01 04:00:00 EST 1989 · Superconductivity; (USA)

OSTI ID:7144051

Shlyakhtin, O A; Pokholok, K V; Oleinikov, N N; Tret'yakov, Y D ^[1]

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1. M. V. Lomonosov Moscow State University, Moscow (SU)

The YBa{sub 2}Cu{sub 2-n}Fe{sub n}O{sub x} samples (n=0.015--0.07; x=6.02--6.83) were synthesized by the ceramic technique with a quenching and subsequent oxidation. A comparison of the Moessbauer spectra obtained by us with those reported in the literature shows that doublet 1 ({delta}=0.04 mm/s; {Delta}=1.95 mm/s) and doublet 2 ({delta}{minus}0.02 mm/s; {Delta}{minus}1.13 mm/s) should be assigned to {sup 57}Fe which is localized in Cu1 site, with coordination numbers 2 and 4, respectively. According to the published data, the doublet 3 ({delta}=0.35 mm/s; {Delta}=0.58 mm/s) should probably be assigned to the octahedrally coordinated {sup 57}Fe in Cu1 site.

• OSTI ID: 7144051
• Journal Information: Superconductivity; (USA), Journal Name: Superconductivity; (USA) Vol. 2:2; ISSN SUPRE
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
EVEN-ODD NUCLEI
INTERMEDIATE MASS NUCLEI
IRON 57
IRON ADDITIONS
IRON ALLOYS
IRON ISOTOPES
ISOTOPES
MOESSBAUER EFFECT
NUCLEI
OXIDES
OXYGEN COMPOUNDS
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES