Electric Susceptibility - Definition of Volume Susceptibility

Definition of Volume Susceptibility

Electric susceptibility is defined as the constant of proportionality (which may be a tensor) relating an electric field E to the induced dielectric polarization density P such that:

where

  • is the polarization density;
  • is the electric permittivity of free space;
  • is the electric susceptibility;
  • is the electric field.

The susceptibility is also related to the polarizability of individual particles in the medium by the Clausius-Mossotti relation. The susceptibility is related to its relative permittivity by:

So in the case of a vacuum:

At the same time, the electric displacement D is related to the polarization density P by:

Read more about this topic:  Electric Susceptibility

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