The incommensurate solid solution phase Na /SUB 5-4x/ Zr /SUB 1+x/ (PO/sub 4/)/sub 3/:0. 04 <0. 15
The orthophosphate solid solution phase, Na /SUB 5-4x/ Zr /SUB 1+x/ (PO/sub 4/)/sub 3/: 0.04 less than or equal to x less than or equal to 0.15 has trigonal symmetry with an apparent one dimensional incommensurate superstructure parallel to c /SUB HEX/ . Using selected area electron diffraction patterns as a guide, an indexing scheme for the powder X-ray data has been devised. The parameter kappa=/iota/supercell//iota/subcell varies smoothly with composition from about 10.4 at x = 0.04 to about4.4 at x = 0.11 and is believed to originate in ordering of the extra interstitial Zr/sup 4 +/ ions. The Na/sup +/ ion conductivity increases gradually with x and for x = 0.108 varies from about5x10/sup -8/ ohm/sup -1/ cm/sup -1/ at 25/sup 0/C to about1x10/sup -3/ ohm/sup -1/ cm/sup -1/ at 300/sup 0/C.
- Research Organization:
- University of Aberdeen, Department of Chemistry, Meston Walk, Aberdeen
- OSTI ID:
- 5112506
- Journal Information:
- Mater. Res. Bull.; (United States), Vol. 20:5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PHOSPHATES
CRYSTALLOGRAPHY
IONIC CONDUCTIVITY
SODIUM COMPOUNDS
SOLID SOLUTIONS
ZIRCONIUM COMPOUNDS
HIGH TEMPERATURE
PHASE STUDIES
POWDER METALLURGY
SUPERSYMMETRY
THERMODYNAMIC PROPERTIES
TRIGONAL LATTICES
X-RAY DIFFRACTION
ALKALI METAL COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
METALLURGY
MIXTURES
OXYGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
SOLUTIONS
SYMMETRY
TRANSITION ELEMENT COMPOUNDS
360102* - Metals & Alloys- Structure & Phase Studies