Dielectric Properties of Ternary ( ) ( )x ( ) x ZnO MgO PO 30 2 5 70− (x = 5, 8, 13) Glasses

Authors

  • S. F. Khor
  • Z. A. Talib
  • W. M. Daud
  • H. A. A. Sidek
  • W. M. M. Yunus
  • A. H. Shaari

DOI:

https://doi.org/10.11113/mjfas.v5n1.285

Keywords:

Dielectric relaxation, Complex permittivity, Phosphate glasses,

Abstract

(ZnO)30(MgO)x(P2O5)70-x glasses of the composition x = 5, 8 and 13 mol % have been prepared by melt quenching technique. The dielectric permittivity (89) and loss factor (8:) were measured in the frequency range from 0.01 Hz to 1 MHz and in the temperature range 303 to 573 K . From the results there are evidence of dipolar relaxation occurring between 103 – 106 Hz while at low frequency the spectrum is dominated by dc conduction which manifested by the 1/@ slope of loss factor plot. Value of the relaxing frequency (@p) plotted against 1/T shows one electrical transportation mechanism. The empirical data was sufficiently fitted by using Harviliak-Negami equation.

References

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G. Sahaya Baskaran, M. V. Ramana Reddy, D. Krishna Rao, N. Veeraiah, J. of Solid State Communications, 145 (2008) 401-406.

T. Sankarappa, M. Prashant Kumar, G. B. Devidas, N. Nagaraja, R. Ramakrishnareddy, J. Molecular Structure, 889 (2008) 308-315.

A. Mogus-Milankovic, V. Licina, S. T. Reis, D. E. Day, J. Non-Cryst. Sol., 353 (2007) 2659-2666.

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Published

05-08-2014