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Department of Dielectrics

Institute of Physics of the Czech Academy of Sciences


Dielectric and IR spectroscopy

  • Soft phonon mode spectroscopy of ferroelectrics, incipient ferroelectrics and relaxor ferroelectrics by using infrared, terahertz and microwave dielectric spectroscopy of crystals, ceramics and thin films.

  • Broad-band dielectric spectroscopy of relaxor ferroelectrics.

  • Study of spin-phonon coupling, magnons and electromagnons in multiferroics using microwave, terahertz and infrared spectroscopy.

  • Magnetoelectric and magnetodielectric coupling in multiferroics.

  • Continuous microwave measurements of magnetic permeability and dielectric permittivity.

  • Broad-band dielectric spectroscopy of composites and materials with inhomogeneous conductivity.

  • Modelling of the dielectric response of composites and ceramics with anisotropic grains by using various effective medium models.

  • Percolation in the dielectric and conductivity response of composites with conducting components.

  • Giant permittivity phenomena, particularly due to inhomogeneous conductivity in weakly conducting materials, Maxwell-Wagner effects.