Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials
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Effects of niobium-doping on the dielectric and switching properties of barium titanate crystals

N.N. Bolshakova1, S.D. Zaviyalova1, G.M. Nekrasova2, E.M. Semenova1

1 Tver State University
2 Tver State Agricultural Academy

DOI: 10.26456/pcascnn/2020.12.042

Original article

Abstract: This paper reports the results of investigations of dielectric properties, switching processes and the domain structure of niobium-containing barium titanate crystals. It was shown that an impurity of niobium Nb5+, whose ions replace Ti4+ and change the ionic composition of the lattice, is important for behavior of the domain structure of BaTiO3:Nb5+ crystals. At a change in temperature (0,3  K/c-1) a transformation of the domain structure occurs in the BaTiO3:Nb5+ crystals under the influence of the internal thermoelastic stresses ~0,7 MPa and the depolarizing fields ~20  kV/m.

Keywords: BaTiO3, unipolar crystals, polarization switching, ligand

  • Nataly N. Bolshakova – Ph. D., Docent, Docent of the Condensed Matter Physic Department, Tver State University
  • Svetlana D. Zaviyalova – Master of Science, Condensed Matter Physic Department, Tver State University
  • Galina M. Nekrasova – Ph. D., Docent of the Mathematics and Computer Science Department, Tver State Agricultural Academy
  • Elena M. Semenova – Ph. D., Docent of the Condensed Matter Physic Department, Tver State University

Reference:

Bolshakova, N.N. Effects of niobium-doping on the dielectric and switching properties of barium titanate crystals / N.N. Bolshakova, S.D. Zaviyalova, G.M. Nekrasova, E.M. Semenova // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. – Tver: TSU, 2020. — I. 12. — P. 42-52. DOI: 10.26456/pcascnn/2020.12.042. (In Russian).

Full article (in Russian): download PDF file

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