| Author: | Pawan Kumar; Sharma, Seema; Thakur, O P; Prakash, Chandra; Goel, T C |
| Advisor: | Advisor |
| Date: | 2004
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| Publisher: | |
| Citation: | Ceramics I
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| Series/Report no.: |
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| Item Type: | Article
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| Keywords: | Dielectric properties; Perovskite; Diffuse phase transition; Relaxor |
| Abstract: | Solid solution of 32 mol% of Lead Titanate in PMN–PT system has been prepared by columbite precursor method. Room temperature X-ray diffraction study reveals the formation of perovskite phase with tetragonal structure. Dielectric measurements have been carried out at different frequencies (0.1 kHz–1 MHz) as a function of temperature (RT to 235 °C). The phase transition was found to be of diffused type. The polarization studies show ferroelectric nature of the material with a high value of remnant polarization (Pr) 21 μC/cm2 and spontaneous polarization (Ps) 29 μC/cm2. Strain versus electric field (S–E) behavior shows piezoelectric nature of the material with high value of maximum strain 0.14% at 60 kV/cm. Pyroelectric coefficient at room temperature has been found to be 3×10−2 μC/cm2 K. |
