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Home » Physics Laboratory Instruments   »   Curie Temperature Kit (For Ferroelectric)
Curie Temperature Kit (For Ferroelectric)

Objective: MEASUREMENT of Dielectric Constant of Ferro-electric Samples at different temperature and hence determine Curie Temperature of Samples

 
Curie Temperature Kit (For Ferroelectric) Curie Temperature Kit (For Ferroelectric)
Code: CTK-001

Curie Temperature Kit (For Ferroelectric Material )   

Ferroelectric materials exhibit electric dipole moment even in the absence of an external electric field. Ferro-electric materials are of theoretical and technical interest as they have usually high and unusual temperature dependent values of the dielectric constant, the piezoelectric effects etc. Ferroelectricity usually disappears above a certain temperature called the Curie temperature. Knowledge of the Curie temperature and the variation of the dielectric constant below and above the Curie temperature is of interest to the physicists and the engineers. A simple experimental set-up is designed to measure the Curie temperature of ferroelectric materials. In this experiment dielectric constant is studied as a function of temperature (RT-160 OC) and transition temperature (Curie temperature) is observed as shown in figure 2. Block diagram of the apparatus is shown in figure 1.

INSTRUMENT

Main unit consists of
a) Digital voltmeter ( 0-9.99 V ac)
b) Audio oscillator ( 1KHz)
c) Standard Capacitors (pf, nf)
Dielectric cell consists of two 1" dia. gold plated brass discs fitted in between the cell holder.
Furnace : PID Controlled (RT – 170 oC)
Thermocouple
PZT Sample