Calcium Titanate Cramic Lab Report

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Structural and electrical characterization of Copper modified Calcium Titanate Ceramic Mehboob Nagarabawadi1, Vinayak S. Uchagaonkar2,Sohail Bagwan3 1Dept. of Physics, Poona College of Arts, Science and Comm., Camp, Pune - 411 001, India. 2Army Institute of Technology/ASK, Pune - 411 015, India. 3Dept. of Physics, Abeda Inamdar College for Girls, Camp, Pune-411001.India.
Abstract: Special physical properties of ferroelectric ceramic prepared by Double sintered Solid State Reaction method studied for a series (Ca100-x Cux TiO3) of Copper doped Calcium Titanate. such as XRD, dielectric hysteresis …show more content…

Table No.2 : Curie temperature of pure and Copper doped Calcium Titanate. Curie Temperature O C 500 485 480 440 418 403 CuO mole % 0.00 0.5 1.0 2.0 4.0 8.0

The pyroelectric properties generally depend on the poling conditions. Therefore Poling of

the sintered pellets was carried out at room temperature for 10 minutes by a constant d c

electric field of 10 kv/cm. To eliminate the current due space charge, the test sample

electrodes were short circuited for 30 minutes before pyroelectric measurements. These

poled sample were slowly heated in a furnace and pyroelectric current were measured

with a digital d c micro voltmeter connected to piccoammeter adaptor at various temperature

and time was also noted for calculating rate of heating. The pyroelectric coefficient were

calculated by direct method suggested by Byer and Roundy(24). The pyroelectric current

produced in samples as a consequence of the change in polarization of a ceramic when

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