Project Details

Multiferroics are materials with ferroic orderings of ions and spins which can mutually interact. Deepening the current knowledge about multiferroics and developing systems for new applications require examining the most suited materials by new experimental approaches. The project aims at verifying several new theories. In (MnO)m/(NiO)n superlattices, we will verify the prediction of turning MnO to a type-II multiferroic by compressive strain of more than 4%. In KTaO₃, EuTiO₃, and (Eu,Sr,Ba)TiO₃ we will study ferroelectricity or magnetization transiently induced by intense pulses of terahertz radiation. In (Eu,Sr,Ba)TiO₃ we will look for phenomena predicted near the multiferroic quantum critical point. In BaCuF₄, we will study the strong magnetoelectric coupling, theoretically expected near 300 K. In new multiferroics with hexaferrite and quadruple perovskite structures, we will identify the different mechanisms of the static and dynamic magnetoelectric couplings. We will use a set of complementary methods, especially microwave, terahertz, Raman, and infrared spectroscopies.