Far-infrared composite-medium study of sintered La/sub 2/NiO/sub 4/ and La(1. 85)Sr(0. 15)CuO(4-y)
Technical Report
·
OSTI ID:6703606
The infrared and far-infrared properties of sintered La/sub 2/Ni0/sub 4/ and La/sub 1.85/Sr/sub 0.15/CuO/sub 4-y/ are modeled accurately within the effective-medium approximation. The electrodynamic properties of La/sub 1.85/Sr/sub 0.15/CuO/sub 4-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 needle-like crystallines and grain geometry.
- Research Organization:
- Cornell Univ., Ithaca, NY (USA)
- OSTI ID:
- 6703606
- Report Number(s):
- AD-A-196373/5/XAB
- Country of Publication:
- United States
- Language:
- English
Similar Records
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OSTI ID:6040373
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRODYNAMICS
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
FABRICATION
FAR INFRARED RADIATION
HIGH TEMPERATURE
INFORMATION
INFRARED RADIATION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MATERIALS
NICKEL COMPOUNDS
NICKEL OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH COMPOUNDS
SINTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRODYNAMICS
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
FABRICATION
FAR INFRARED RADIATION
HIGH TEMPERATURE
INFORMATION
INFRARED RADIATION
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MATERIALS
NICKEL COMPOUNDS
NICKEL OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH COMPOUNDS
SINTERING
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS