Raman characterization of iron clustering in YBa[sub 2](Cu[sub 1[minus]x]Fe[sub x])[sub 3]O[sub 7+[delta]]
- Florida Atlantic Univ., Boca Raton, FL (United States)
The phonon modes of A[sub g] symmetry of YB[sub 2] symmetry of YB[sub 2](Cu[sub 1[minus]x]Fe[sub x])[sub 3]O[sub 7+[delta]] at 435 cm[sup [minus]1] and 502 cm[sup [minus]1] were studied using Raman spectroscopy at various iron concentrations (x), with the aim of gaining an understanding of the role that the two copper-oxygen substructures of plane and chain play in the generation of superconductivity in YBa[sub 2]Cu[sub 3]O[sub 7[minus][delta]]. The room temperature Raman spectra indicated a trend toward saturation in frequency shift that was interpreted as evidence for supporting the occurrence of a type of iron clustering in the (001) basal plane. In addition, the Curie-Weiss type behavior observed might be attributed to the formation of a long range clustering chain for an Fe concentration [ge] 10%.
- OSTI ID:
- 6301478
- Journal Information:
- High Temperature Science (An International Journal); (United States), Journal Name: High Temperature Science (An International Journal); (United States) Vol. 32:1; ISSN HITSAC; ISSN 0018-1536
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CONCENTRATION RATIO
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EXPERIMENTAL DATA
INFORMATION
IRON COMPOUNDS
IRON OXIDES
LASER SPECTROSCOPY
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RAMAN SPECTROSCOPY
SAMPLE PREPARATION
SOLID CLUSTERS
SPECTROSCOPY
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES