Far-infrared composite-medium study of sintered La/sub 2/NiO/sub 4/ and La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4-//sub y/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
The infrared and far-infrared properties of sintered La/sub 2/NiO/sub 4/ and La/sub 1.85/Sr/sub 0.15/CuO/sub 4-//sub y/ are modeled accurately within the effective-medium approximation. The electrodynamic properties of La/sub 1.85/Sr/sub 0.15/CuO/sub 4-//sub y/ grains are highly anisotropic with the strong 0.5-eV electronic transition polarized along the low-conductivity crystal direction. The apparent superconducting gap frequency for the sintered material depends crucially on the grain geometry. Our experimental data are fit with needlelike crystallites and 2..delta../k/sub B/T/sub 0/ = 2.6.
- Research Organization:
- Laboratory of Atomic and Solid State Physics and Materials Science Center, Cornell University, Ithaca, New York 14853-2501
- OSTI ID:
- 6040373
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:10; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
Similar Records
Far-infrared composite-medium study of sintered La/sub 2/NiO/sub 4/ and La(1. 85)Sr(0. 15)CuO(4-y)
Infrared anisotropy of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4-//sub y/
Upper critical fields and high superconducting transition temperatures of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/ and La/sub 1. 85/Ba/sub 0. 15/CuO/sub 4/
Technical Report
·
Thu Oct 01 00:00:00 EDT 1987
·
OSTI ID:6703606
Infrared anisotropy of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4-//sub y/
Journal Article
·
Mon Nov 30 23:00:00 EST 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:5619415
Upper critical fields and high superconducting transition temperatures of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/ and La/sub 1. 85/Ba/sub 0. 15/CuO/sub 4/
Journal Article
·
Sun Mar 01 23:00:00 EST 1987
· Appl. Phys. Lett.; (United States)
·
OSTI ID:6973293
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
ANISOTROPY
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ENERGY GAP
FAR INFRARED RADIATION
INFRARED RADIATION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MATERIALS
NICKEL COMPOUNDS
NICKEL OXIDES
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH COMPOUNDS
REFLECTIVITY
SINTERED MATERIALS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ANISOTROPY
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ENERGY GAP
FAR INFRARED RADIATION
INFRARED RADIATION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MATERIALS
NICKEL COMPOUNDS
NICKEL OXIDES
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH COMPOUNDS
REFLECTIVITY
SINTERED MATERIALS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS