Synthesis and characterization of YBa/sub 2/(Cu/sub 1-//sub x/M/sub x/)/sub 3/O/sub 7-//sub delta/(M = Co,Ni): Crystal symmetry, superconductivity, and the role of oxygen

Journal Article · Mon Aug 01 00:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.38.2432· OSTI ID:6866459

Bringley, J F; Chen, T; Averill, B A; Wong, K M; Poon, S J

We have prepared and characterized a series of Co- and Ni-doped YBa/sup 2/(Cu/sub 1-//sub x/M/sub x/)/sub 3/O/sub y/ compounds and determined the oxygen content for 0.0less than or equal toxless than or equal to0.15 and 0.0less than or equal toxless than or equal to0.20, for M = Co and Ni, respectively. The oxygen stoichiometry in Co-doped materials does not vary for x<0.10 but increases to about 7.3 for 15% Co. The oxygen content of Ni-doped materials remains constant at 7.0 +- 0.1 for all x. The solubility limits of the solid solutions are xapprox. =0.15 for Co and xapprox. =0.20 for Ni. The Co-doped material undergoes a transformation from orthorhombic to tetragonal symmetry at 0.025

• Research Organization: Department of Chemistry, University of Virginia, Charlottesville, Virginia 22901
• OSTI ID: 6866459
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:4; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
&amp; Refractories-- Structure &amp; Phase Studies
360204 -- Ceramics
Cermets
&amp; Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COBALT ADDITIONS
COBALT ALLOYS
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL FIELD
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIFFRACTION
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MATERIALS
NICKEL ADDITIONS
NICKEL ALLOYS
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SCATTERING
STOICHIOMETRY
SUPERCONDUCTIVITY
SYNTHESIS
TETRAGONAL LATTICES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES