Substitution of 3 d metals for Cu in Bi sub 2 (Sr sub 0. 6 Ca sub 0. 4 ) sub 3 Cu sub 2 O sub y
- Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113, Japan (JP)
The effect of the substitution of 3{ital d} metals (Fe, Co, Ni, and Zn) for Cu in a high-temperature superconductor Bi{sub 2}(Sr,Ca){sub 3}Cu{sub 2}O{sub {ital y}} was investigated by measuring lattice constants, dc resistivity, Hall effect, and magnetic susceptibilities in normal and superconducting phases. For all kinds of impurities, within the composition range where the single-phase samples are synthesized, the superconducting transition temperature {ital T}{sub {ital c}} was found to decrease with increasing impurity concentration. Even nonmagnetic Zn was found to decrease {ital T}{sub {ital c}}, as well as, magnetic Fe, Co, and Ni, without changing the hole concentration. These behaviors cannot be explained by the Abrikosov-Gorkov theory for conventional BCS superconductors. Possible explanations are discussed.
- OSTI ID:
- 6861217
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Vol. 41:7; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH OXIDES
IMPURITIES
CALCIUM OXIDES
COPPER OXIDES
STRONTIUM OXIDES
ABRIKOSOV THEORY
COBALT ADDITIONS
HALL EFFECT
IRON ADDITIONS
LATTICE PARAMETERS
MAGNETIC SUSCEPTIBILITY
NICKEL ADDITIONS
PARAMETRIC ANALYSIS
SUPERCONDUCTORS
TRANSITION TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BISMUTH COMPOUNDS
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COPPER COMPOUNDS
IRON ALLOYS
MAGNETIC PROPERTIES
NICKEL ALLOYS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STRONTIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity