1. Impedance and Pyroelectric Measurements on Dy0.75Bi3.25Ti2.9625Nb0.03O12 Ceramics.
- Author
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Prasad, N. V. and Kumar, G. S.
- Subjects
- *
PYROELECTRICITY , *ELECTRIC impedance , *PYROELECTRIC detectors , *ELECTRONIC ceramics , *THERMAL conductivity - Abstract
Tri (Dy3 +) and pentavalent (Nb+5) modified new polycrystalline material of Aurivillius family (Dy0.75Bi3.25Ti2.9625Nb0.03O12) was prepared by solid-state reaction method and the lattice parameters were calculated by using X-ray diffractogram. Impedance measurements were carried out from room temperature to 500°C in the frequency range of 100 Hz to 1 M Hz. Impedance spectroscopic plots show non-Debye type and detailed ac-conductivity analysis was also employed to understand the heterogeneity of the present electro-ceramics. The results were corroborated with the proposed defect formula and in addition, thermal stimulated current measurements show that the present sample has an excellent pyroelectric response. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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