Dielectric properties of Li2O-CaF2-P2O5 glass ceramic system doped with NiO

Studies on various physical properties viz., dielectric properties (dielectric constant, loss tan δ, a.c conductivity σ) over a wide range of frequency and temperature, of Li2O-CaF2-P2O5: NiO glass ceramics have been reported. The dielectric constant and loss variation with the concentration of NiO...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2009-08, Vol.2 (1), p.012030-5
Main Authors: Krishna, G Murali, Venkateswararao, G, Srikumar, T, Rao, K Sambasiva, Prasad, Ch Ram
Format: Article
Language:English
Subjects:
Calcium fluoride
Dielectric properties
Dielectric relaxation
Glass ceramics
Graphical methods
High temperature
Lithium oxides
Nickel oxides
Permittivity
Phosphorus pentoxide
Physical properties
Space charge
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Summary:Studies on various physical properties viz., dielectric properties (dielectric constant, loss tan δ, a.c conductivity σ) over a wide range of frequency and temperature, of Li2O-CaF2-P2O5: NiO glass ceramics have been reported. The dielectric constant and loss variation with the concentration of NiO have been explained on the basis of space charge polarization mechanism. The dielectric relaxation effects exhibited by these samples have been analyzed by a graphical method and the spreading of dielectric relaxation has been established. The a.c conductivity in the high temperature region seems to be connected both with electronic transfer and ionic movements.
ISSN:1757-899X
1757-8981
1757-899X
DOI:10.1088/1757-899X/2/1/012030