Exploration of Phase Equilibria in the Triple Molybdate System, Electrical Properties of New Rb5M1/3Zr5/3(MoO4)6 (M-Ag, Na) Phases

The formation of Rb 5 Ag 1/3 Zr 5/3 (MoO 4 ) 6 compound during the study of Rb 2 MoO 4 -Ag 2 MoO 4 -Zr(MoO 4 ) 2 system by x-ray diffraction technique was established. Its unit cell parameters, phase transition were determined. The dimensions of trigonal unit cell Rb 5 Ag 1/3 Zr 5/3 (MoO 4 ) 6 are a...

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Bibliographic Details
Published in:Journal of phase equilibria and diffusion 2021, Vol.42 (6), p.824-830
Main Authors: Dorzhieva, Sesegma G., Bazarova, Jibzema G., Bazarov, Bair G.
Format: Article
Language:English
Subjects:
Anomalies
Ceramics
Composites
Crystallography and Scattering Methods
Electrical properties
Engineering Thermodynamics
Frequency ranges
Glass
Heat and Mass Transfer
High temperature
Metallic Materials
Natural Materials
Parameters
Phase equilibria
Phase transitions
Physics
Physics and Astronomy
Temperature
Thermodynamic properties
Thermodynamics
Unit cell
Zirconium
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Summary:The formation of Rb 5 Ag 1/3 Zr 5/3 (MoO 4 ) 6 compound during the study of Rb 2 MoO 4 -Ag 2 MoO 4 -Zr(MoO 4 ) 2 system by x-ray diffraction technique was established. Its unit cell parameters, phase transition were determined. The dimensions of trigonal unit cell Rb 5 Ag 1/3 Zr 5/3 (MoO 4 ) 6 are a  = 10.7235 (3), c  = 38.548 (1), V = 3838.9 (3). Temperature and frequency dependences of dielectric parameters for Rb 5 M 1/3 Zr 5/3 (MoO 4 ) 6 ( M -Ag, Na) ceramics were measured by impedance spectroscopy in the temperature and the frequency range 300-773 K and 1 Hz-10 kHz, respectively. The correlation of dielectric and thermal parameters in the high-temperature region near the phase transition was revealed. Arrhenius plots of the conductivity showed anomalies at high temperatures (723-773 K), increasing several orders of magnitude to 10 −3  S K/cm.
ISSN:1547-7037
1863-7345
1934-7243
DOI:10.1007/s11669-021-00927-4