Low frequency nonlinearity in layered ferroelectrics BaBi2Nb2O9 and SrBi2Ta2O9

Author

Bormanis, K. ; Kalvane, A. ; Burkhanov, A.I. ; Kochergin, Y.V.

Author_Institution

Inst. of Solid State Phys., Univ. of Latvia, Riga, Latvia

fYear

2010

fDate

4-9 July 2010

Firstpage

1

Lastpage

3

Abstract

The dielectric nonlinearity in layered ferroelectric ceramics of BaBi₂Nb₂O₉ and SrBi₂Ta₂O₉ is studied by analysing polarisation loops and measuring dielectric permittivity as a function of frequency. In case of BaBi₂Nb₂O₉ the system has a broad phase transition manifesting essential features of a slow relaxation of polarisation; in case of SrBi₂Ta₂O₉ the processes contributing to polarisation switching are driven by rearrangement of the domain structure.

Keywords

barium compounds; bismuth compounds; dielectric polarisation; dielectric relaxation; electric domains; ferroelectric ceramics; ferroelectric switching; ferroelectric transitions; permittivity; strontium compounds; BaBi₂Nb₂O₉; SrBi₂Ta₂O₉; dielectric nonlinearity; dielectric permittivity; domain structure; layered ferroelectric ceramics; low frequency nonlinearity; phase transition; polarisation loop; polarisation relaxation; polarisation switching; Ceramics; Dielectrics; Frequency measurement; Permittivity; Shape; Switches; ceramics; dielectric response; layered ferroelectrics; phase transition; polarisation switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid Dielectrics (ICSD), 2010 10th IEEE International Conference on

Conference_Location

Potsdam

Print_ISBN

978-1-4244-7945-0

Electronic_ISBN

978-1-4244-7943-6

Type

conf

DOI

10.1109/ICSD.2010.5568257

Filename

5568257