Low-temperature synthesis and magnetic properties of the mixed-valence lanthanide intercalation compounds Eu/sub x/TiS/sub 2/ and Yb/sub x/TiS/sub 2/
The lanthanide (L) intercalation compounds Eu/sub x/TiS/sub 2/ (x = 0.007, 0.014, and 0.066) and Yb/sub x/TiS/sub 2/ (x = 0.060) have been synthesized by thermal deintercalation of NH/sub 4//sup +/ and NH/sub 3/ from the corresponding L-NH/sub 3/ precursors at 270/sup 0/C and characterized by thermogravimetric analysis, powder X-ray diffraction, and SQUID magnetometry. Both L/sup 2+/ and L/sup 3+/ are present in the van der Waals gap, and the deintercalation process is accompanied by the conversion of some of the L/sup 3+/ to L/sup 2+/. The resulting compounds contain comparable concentrations of L/sup 2+/ and L/sup 3+/. Magnetic exchange interactions are negligible due to the low concentrations of lanthanide cations.
- Research Organization:
- Dept. of Chemistry, Arizona State Univ., Tempe, AZ 85287
- OSTI ID:
- 6877939
- Journal Information:
- Mater. Res. Bull.; (United States), Vol. 21:9
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CLATHRATES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
MAGNETIC PROPERTIES
EUROPIUM SULFIDES
TITANIUM SULFIDES
YTTERBIUM SULFIDES
CATIONS
CHEMICAL REACTION KINETICS
HIGH TEMPERATURE
ION EXCHANGE
THERMAL GRAVIMETRIC ANALYSIS
VALENCE
X-RAY DIFFRACTION
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL ANALYSIS
COHERENT SCATTERING
DIFFRACTION
EUROPIUM COMPOUNDS
GRAVIMETRIC ANALYSIS
IONS
KINETICS
PHYSICAL PROPERTIES
QUANTITATIVE CHEMICAL ANALYSIS
RARE EARTH COMPOUNDS
REACTION KINETICS
SCATTERING
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS
THERMAL ANALYSIS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTERBIUM COMPOUNDS
360601* - Other Materials- Preparation & Manufacture
360603 - Materials- Properties