Effect of oxygen desorption on electrical transport in YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/

Journal Article · Sat Oct 31 23:00:00 EST 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.36.7262· OSTI ID:5573874

Fiory, A T; Gurvitch, M; Cava, R J; Espinosa, G P

Electrical resistivity of polycrystalline YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/, at temperatures between 20 and 900 /sup 0/C and various O/sub 2/ pressures, is correlated with oxygen deficiency delta. The observed strong increase above 400 /sup 0/C is explained by a model of homogeneous disorder: elastic scattering proportional to delta and electronic density of states depressed as (delta/sub c/-delta), where delta/sub c/approx. =0.85. The orthorhombic-to-tetragonal structural transition temperature, which is broadened by intrinsic fluctuations, is shown to be a linear function of delta.

• Research Organization: AT and T Bell Laboratories, Murray Hill, New Jersey 07974
• OSTI ID: 5573874
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:13; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL-PHASE TRANSFORMATIONS
CRYSTALS
DESORPTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY-LEVEL DENSITY
HIGH TEMPERATURE
MEDIUM TEMPERATURE
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POLYCRYSTALS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES