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Research topics
Last Update
17.02.2018

X-ray diffraction is described by the Rietveld method in Na1/2Bi1/2TiO3-based solid solutions. Stability of ferroelectric state and coexistence of phases with different symmetry is determined in the region of structural phase transition.

Nature of electrocaloric effect is studied in connection with various mechanisms of polarization in relaxor ferroelectrics.

Phase diagram and nature of phase transition are determined for Na1/2Bi1/2TiO3-BaTiO3-Na1-xKxNbO3 solid solutions.

Optical second harmonic generation is used as sensitive probe identifying polar state in NBT based solid solutions below morphotropic phase boundary.

Intensity and spectral features of photoluminescence in lanthanides doped ABO3 perovskites is studied in dependence on host symmetry and structural disorder.

ABO3 perovskites are doped with 3d elements (Cr, Mn, Fe, Co, Ni, Cu) to study their influence on stability of ferroelectric state and dielectric properties.

Synthesis of lead-free (K0.5Na0.5)NbO3, (Na0.5Bi0.5)NbO3, BaTiO3, BaMnO3, SrMnO3, BiFeO3, LaSrMnO3 ceramics. Development of novel Na0.5Bi0.5TiO3 based lead-free ferroelectric materials doped with monoxides (including lanthanides), creating binary and multicomponent solid solutions.

Synthesis of complex lead containing compounds with the chemical formula PbB’1/2B’’1/2O3 (where B’=Sc+3, Lu+3, Yb+3, Tm+3; B’’= Nb+5, Ta+5) and PbB’1/3B”2/3O3, (where B’=Mg+2, Zn+2, Ni+2, Cd+2, B”- Nb+5, Ta+5).

Impact of technological factors (solid-state synthesis, two-step sintering, hot pressing) on the properties of ferroelectric ceramics. Investigation of the mechanisms of synthesis and sintering.

Elemental analysis and microstructural studies of synthesized samples, analysis of grain size and grain size distribution, thereby obtaining information of grain growth mechanisms and microstructural evolution;

Sintering of hot-pressed transparent, with 3d-elements and lanthanides modified (Pb,La)(Zr,Ti)O3 (PLZT).