Structural disorder and transport in ternary oxides with the pyrochlore structure
Our first two years of work on pyrochlore compounds under this program have been very productive. We have been able to tie changes in the electrical conductivity to variations of the structural disorder in the Gd/sub 2/ (Zr/sub x/Ti/sub 1/minus/x/)/sub 2/O/sub 7/ pyrochlore solid solution. This has enabled us to improve our scientific understanding of the source of fast ion conduction in these systems. It has also led to insights into methods for tailoring the electrical properties in order to achieve a wide range of useful characteristics. We now have the ability to make intrinsic solid electrolytes, mixed conductors, semiconductors, and insulators from Gd/sub 2/ (Zr/sub x/Ti/sub 1/minus/x/)/sub 2/O/sub 7/ by manipulating the composition and dopant content. In the following, we discuss some of these observations. 20 refs., 14 figs., 2 tabs.
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge (USA). Crystal Physics and Optical Electronics Lab.
- DOE Contract Number:
- FG02-86ER45261
- OSTI ID:
- 6237884
- Report Number(s):
- DOE/ER/45261-1; ON: DE89012577
- Country of Publication:
- United States
- Language:
- English
Similar Records
Structural disorder and transport in ternary oxides with the pyrochlore structure: Progress report for period July 1, 1986-February 1, 1987. [Gd/sub 2/Ti/sub 2/O/sub 7/-Gd/sub 2/Zr/sub 2/O/sub 7/]
Distortion-stabilized ordered structures in A2BB’O7 mixed pyrochlores
Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ARRHENIUS EQUATION
CHALCOGENIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EQUATIONS
GADOLINIUM COMPOUNDS
GADOLINIUM OXIDES
IONIC CONDUCTIVITY
LATTICE PARAMETERS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POINT DEFECTS
PYROCHLORE
RARE EARTH COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VACANCIES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES