Experiment nr. 16

Dielectric Constant and Ferroelectric Hysteresis

Supervisor: Dr. Jürgen Vogt

The capacitance and the loss resistance of ceramic disks are measured at two different frequencies. From that the real and imaginary part of the dielectric constant are determined. A special class of dielectrics are ferroelectrics. The spontaneous polarisation and the phase transition in ferroelectric solids are studied by measuring the change of the dielectric constant with temperature. Additionally the dielectric hysteresis is measured.