Oxygen-vacancy behavior in La/sub 2-//sub x/Sr/sub x/CuO/sub 4-//sub y/ by positron annihilation and oxygen diffusion

Journal Article · Tue Sep 01 04:00:00 EDT 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.36.3903· OSTI ID:6254765

Smedskjaer, L C; Routbort, J L; Flandermeyer, B K; Rothman, S J; Legnini, D G; Baker, J E

Oxygen-diffusion and positron-annihilation results for La/sub 2-//sub x/Sr/sub x/CuO/sub 4-//sub y/ compounds are reported. A qualitative explanation of the observed results is given on the basis of a model in which the oxygen-vacancy concentration in La/sub 2-//sub x/Sr/sub x/CuO/sub 4-//sub y/ is determined by Sr/sup 2+/ ion clustering on the La sublattice. This model also leads to a maximum in the Cu/sup 3+/ ion concentration as a function of the Sr/sup 2+/ ion concentration.

• Research Organization: Argonne National Laboratory, Argonne, Illinois 60439
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6254765
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:7; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
ATOM TRANSPORT
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIFFUSION
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
LEPTONS
MEDIUM TEMPERATURE
NEUTRAL-PARTICLE TRANSPORT
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
POINT DEFECTS
POSITRONS
RADIATION TRANSPORT
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
VACANCIES