Effect of Mn on the superconductivity of YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/
We have prepared samples of YBa/sub 2/(Cu/sub 1-//sub x/Mn/sub x/)/sub 3/O/sub 7-//sub delta/, with x = 0.0, 0.01, 0.025, 0.05, 0.075, 0.10, 0.15, and 0.20. Superconductivity with T/sub c/ in the range 84--92 K is demonstrated by resistivity and magnetic susceptibility measurements. The substitution of Mn for Cu did not affect the onset temperature for the resistivity transition. X-ray diffraction analysis revealed the presence of additional phases, the amount increasing with Mn content, and also a slight modification of the YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/ lattice parameters. A strong correlation between the width of the superconducting transition and the presence of additional phases was observed.
- Research Organization:
- Instituto de Fisica ''Gleb Wataghin,'' Universidade Estadual de Campinas (UNICAMP), 13081 Campinas, Sa-italic-tildeo Paulo, Brazil
- OSTI ID:
- 6844771
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:7; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LATTICE PARAMETERS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MANGANESE COMPOUNDS
MANGANESE OXIDES
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
SCATTERING
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES