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- Title
Effect of Zr/Ti ratio on structural, vibrational, magnetic and dielectric properties of (0.95)PbZrTiO-(0.05)BiFeO ceramics.
- Authors
Sharma, Subhash; Singh, Vikash; Kotnala, R.; Dwivedi, R.
- Abstract
We have investigated the structural, vibrational, ferroelectric, magnetic and dielectric properties of (0.95)PbZrTiO-(0.05)BiFeO (x = 0.51, 0.53 and 0.55) ceramics, prepared by the sol-gel route. Rietveld refined X-ray powder diffraction patterns of these samples confirm the single phase formation with a tetragonal structure (P4mm) symmetry at room temperature. The Williamson-Hall analysis was used to study the contributions of crystallite size and lattice strain on the peak broadening in the different patterns. Reduction in c/a ratio with x indicates poor ferroelectric behaviour for x = 0.55. Infrared spectroscopy revealed the slight shift of phonon modes towards the lower wave number side and increase in the bond length with increasing x which is in good agreement with the Rietveld analysis. Room temperature dielectric measurements of these samples show dispersion in ε which is associated with a peak in tanδ versus logf plots. M-H hysteresis loops exhibit weak ferromagnetism for x = 0.51 and almost anti-ferromagnetic behaviour for x = 0.55.
- Subjects
ELECTRIC properties of bismuth iron oxide; BISMUTH iron oxide; MAGNETIC properties; DIELECTRIC properties of lead zirconate titanate; FERROELECTRICITY; INFRARED spectroscopy; HYSTERESIS loop; FERROMAGNETISM
- Publication
Journal of Materials Science: Materials in Electronics, 2014, Vol 25, Issue 6, p2697
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-014-1931-1