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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.47 [2009] >
IJPAP Vol.47(03) [March 2009] >
| Title: | Structural and dielectric behaviour of barium substituted lead zinc niobate |
| Authors: | Himanshu, A K
Gupta, D C
Dutta, Alo
Sinha, T P
Bandyopadhayay, S K |
| Issue Date: | 2009 |
| Publisher: | CSIR |
| Abstract: | The polycrystalline samples of (Pb1xBax)(Zn1/3Nb2/3)O3 (PBZN) ceramics have been synthesized by the columbite precursor method. X-ray diffraction analysis of PBZN synthesized for x = 0.15, 0.25, 0.35 and 0.50 shows a cubic perovskite phase at room temperature. The changes in the structures are observed with increasing Ba contents in PBZN. The dielectric dispersion of the solid solutions has been studied as a function of temperature in the frequency range 100 Hz-1MHz. The temperature variation of the real components (ƐƐ) at different frequencies of the dielectric permittivity shows a broad maximum. The diffuse peaks in versus T confirm the relaxor behaviour of PBZN. The changes in the relaxor properties of the compounds are found to be compositional dependent. The frequency dependence of Tm in these compounds with barium substitution is modeled using Vogel-Fulcher relation. |
| Page(s): | 212-219 |
| ISSN: | 0019-5596 |
| Source: | IJPAP Vol.47(03) [March 2009]
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