High-temperature order-disorder phase transition in the superconductor Y/sub 1/Ba/sub 2/Cu/sub 3/O/sub 6+//sub delta/ observed by electrical resistivity measurements

Journal Article · Thu Oct 01 00:00:00 EDT 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.36.5723· OSTI ID:6198519

Freitas, P P; Plaskett, T S

The order-disorder transition involving oxygen atoms and vacancies in the Cu-O basal planes of the superconductor Y/sub 1/Ba/sub 2/Cu/sub 3/O/sub 6+//sub delta/ was studied under several oxygen partial pressures. The transition is second order in nature, shows small hysteresis probably due to twin boundary kinetics, and always occurs at the same oxygen concentration. The average site energy for an oxygen atom in the lattice is -3.41 eV. No superconductivity is found for a fully disordered sample.

• Research Organization: IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598
• OSTI ID: 6198519
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 36:10
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
ORDER-DISORDER TRANSFORMATIONS
COPPER OXIDES
YTTRIUM OXIDES
ELECTRIC CONDUCTIVITY
HYSTERESIS
SUPERCONDUCTORS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies