Abstract
BaBi 4Ti 4O 15 (BBT) ceramic was synthesized using mixed oxide route and the structural and electrical properties were investigated systematically. The structural studies confirmed it to be an n=4 member of the Aurivillius oxide. A broad dielectric peak with frequency dependent dielectric maximum temperature was observed. The dielectric relaxation obeyed the Vogel-Fulcher relation wherein f 0=8.37E14 Hz, E a=0.13 eV, and T f=608.18 K. The diffuseness parameter γ established the relaxor nature and it was attributed to the A-site cationic disorder. The specimen exhibited the excellent reproducibility in the measurements of displacement current, a remnant polarization of 5.4 μC/cm 2, and a coercive field of 4.03 MV/m. The room temperature piezoelectric coefficient d 33 was found to be 23 pC/N and the field-induced strain S was about 0.018% at the 8 MV/m electric field.
Original language | English |
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Pages (from-to) | 979-983 |
Number of pages | 5 |
Journal | Solid State Communications |
Volume | 152 |
Issue number | 12 |
DOIs | |
State | Published - Jun 2012 |
Keywords
- A. Ferroelectrics
- B. BBT
- D. Relaxation phase transition