Moessbauer studies of the high-T/sub c/ superconductor YBa/sub 2/(Cu/sub 1-//sub x/Fe/sub x//sup 57/)/sub 3/O/sub 7-//sub delta/ (x = 0. 033)
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
The high-T/sub c/ superconductor YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/ doped with 3.3 at. % has been investigated by Moessbauer spectroscopy. Measurements on samples prepared under various heat treatments show that Fe substitutes exclusively the Cu(1) sites with Moessbauer signals corresponding to tetragonal and orthorhombic local symmetry. The relative abundance of these signals allows the determination of the oxygen-deficiency parameter. Moessbauer measurements at low temperatures reveal magnetic hyperfine interactions which are tentatively attributed to low-dimensional magnetic ordering. Deoxygenation of the YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/ phase results in the formation of the Y/sub 2/BaCuO/sub 5/ phase (the green phase) in a reversible way. The Moessbauer properties of the /sup 57/Fe-doped phase are reported.
- Research Organization:
- Demokritos National Research Center for Physical Sciences, Institute of Materials Science, 153 10 Aghia Paraskevi Attiki, Greece
- OSTI ID:
- 6749509
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:13; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Mon Feb 29 23:00:00 EST 1988
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
HYPERFINE STRUCTURE
IRON ADDITIONS
IRON ALLOYS
IRON COMPOUNDS
IRON OXIDES
MAGNETIC PROPERTIES
MOESSBAUER EFFECT
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SAMPLE PREPARATION
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
HYPERFINE STRUCTURE
IRON ADDITIONS
IRON ALLOYS
IRON COMPOUNDS
IRON OXIDES
MAGNETIC PROPERTIES
MOESSBAUER EFFECT
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SAMPLE PREPARATION
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES