Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Transport properties of the oxides Y/sub 1/. sqrt. /sub x/Pr/sub x/Ba/sub 2/Cu/sub 3/O/sub 7/. sqrt. /sub delta/ (0less than or equal toxless than or equal to1): Effects of band filling and lattice distortion on superconductivity

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
OSTI ID:5220997
; ; ; ; ;

The oxides with composition Y/sub 1/..sqrt../sub x/Pr/sub x/Ba/sub 2/(Cu/sub 3/O/sub 7/..sqrt../sub delta/)(0less than or equal toxless than or equal to1) 7-delta (0less than or equal toxless than or equal to1) are characterized by x-ray diffraction, resistivity (rho) and thermoelectric power (S) measurements. X-ray diffraction shows an orthorhombically distorted perovskite structure for all compositions, the pseudotetragonality increasing with x. The substitution of the tetravalent Pr for the trivalent Y atom increases the band filling in these materials. As a consequence, the superconducting transition temperature is progressively decreased with increasing x, and S significantly increases. Thermopower and resistivity measurements indicate that these oxides have relatively narrow bands and that the electronic correlations dominate their properties

Research Organization:
Departamento de Quimica, Instituto de Ciencias e Engenharia Nuclear(enLaboratorio Nacional de Engenharia e Technolgia Industrial P-2686 Sacavem Codex, Portugal
OSTI ID:
5220997
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:13; ISSN PRBMD
Country of Publication:
United States
Language:
English

Similar Records

Superconducting behaviors in (Y/sub 1-//sub x/La/sub x/)Ba/sub 2/Cu/sub 3/O/sub y/ (0less than or equal toxless than or equal to1)
Journal Article · Mon Nov 14 23:00:00 EST 1988 · J. Appl. Phys.; (United States) · OSTI ID:6743802
Oxygen-vacancy ordering in the Ba/sub 2/YCu/sub 3/O/sub 7-//sub x/(0less than or equal toxless than or equal to1) superconducting system
Journal Article · Sat Oct 31 23:00:00 EST 1987 · Phys. Rev. B: Condens. Matter; (United States) · OSTI ID:5574338
Temperature stability of Al/sub x/Ga/sub 1/. sqrt. /sub x/As (0less than or equal toxless than or equal to1) thermal oxide masks for selective-area epitaxy
Journal Article · Fri Jul 15 00:00:00 EDT 1988 · J. Appl. Phys.; (United States) · OSTI ID:7257010

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PARAMETRIC ANALYSIS
PEROVSKITES
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SCATTERING
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMOELECTRIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES