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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/1316

Title: Dielectric, piezoelectric and pyroelectric properties of PMN–PT (68:32) system
Authors: Pawan Kumar
Sharma, Seema
Thakur, O P
Prakash, Chandra
Goel, T C
Keywords: Dielectric properties
Diffuse phase transition
Issue Date: 2004
Citation: Ceramics International, 30(4), 585-589
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.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/1316
Appears in Collections:Physics

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