Defect characterization of electronic conducting pseudo-perovskite systems
The goal of the investigation presented in this report is to study the inter-relationship between electrical conductivity, oxidation- reduction kinetics, defect structure, and composition of n- and p- type binary and ternary transition metal oxides. The experimental part of the investigation included specimen preparation, thermogravimetric measurements, X-ray diffraction, thermally stimulated current, oxygen diffusion, optical absorption, transmission electron microscopy, electrical conductivity, and Seebeck measurements. The systems studied or being studied are LaMnO{sub 3}-LaCrO{sub 3}-LaCoO{sub 3}, Y{sub 1-x}Ca{sub x}CrO{sub 3}, Sr-doped LaMnO{sub 3}, Y{sub 1-x}Ca{sub x}MnO{sub 3}, and Ba{sub 2}YCu{sub 3}O{sub 7-x}.
- Research Organization:
- Missouri Univ., Rolla, MO (USA)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- FG02-85ER45219
- OSTI ID:
- 5554561
- Report Number(s):
- DOE/ER/45219-5; ON: DE91014385
- Country of Publication:
- United States
- Language:
- English
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METALS
CALCIUM
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
COHERENT SCATTERING
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DIFFRACTION
DOCUMENT TYPES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON MICROSCOPY
ELEMENTS
HIGH-TC SUPERCONDUCTORS
KINETICS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MANGANESE COMPOUNDS
MANGANESE OXIDES
METALS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHYSICAL PROPERTIES
PROGRESS REPORT
RARE EARTH COMPOUNDS
REACTION KINETICS
SCATTERING
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES