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Description of the frequency
dependent model of the electronic contribution to polarisability and
The ionic contribution to polarisation and permittivity.
Derivation of the dipolar contribution to polarisation and permittivity (as an example of a relaxation mechanism). Saturation polarisation. Temperature and frequency dependence of the dipolar contribution to the permittivity.
You need to be familiar with the physical basis of and details of the model used to explain the electronic contribution to permittivity. You should be aware of the basic functional form of the frequency dependent results and that the main features in this model appear in the UV region.
You should know how to relate the results of optical measurements to theory.
You should be aware of the source of the ionic contribution to polarisation and the location of the main features of this contribution - in the IR region.
You need to
the key points of the derivation of the dipolar contribution to
permittivity and be aware of the general features of this contribution
as a function of frequency.