Abstract
The dielectric permittivity of A-site ion substituted (Na1/2Bi1/2)TiO3(A=Pb,Sr) solid solutions has been investigated with the aid of structural analysis. As the addition of PT increased, the first order characteristics of the phase transition appeared. In contrast, additions of ST made the solid solution exhibit relaxor ferroelectrics behavior. Microscopic structural analysis revealed that the dielectric properties were determined by cation ordering which controlled the translational symmetry and domain configuration. In the NBT–PT solid solution, A-site cations were randomly redistributed and macrodomains formed. However, the addition of ST distributed A-site cations with local ordering and divided the domains of NBT into micropolar regions. The contrasting effects of the addition of the Pb and Sr cations on the dielectric properties of NBT are discussed in terms of the polarizability and the tolerance factors as they relate to the perovskite structure.
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Dates
Type | When |
---|---|
Created | 23 years ago (July 26, 2002, 9:27 a.m.) |
Deposited | 1 year, 6 months ago (Feb. 7, 2024, 9:50 a.m.) |
Indexed | 7 months, 3 weeks ago (Dec. 30, 2024, 1:07 p.m.) |
Issued | 23 years, 4 months ago (April 1, 2002) |
Published | 23 years, 4 months ago (April 1, 2002) |
Published Print | 23 years, 4 months ago (April 1, 2002) |
@article{Lee_2002, title={Phase transitions and dielectric properties in A-site ion substituted (Na1/2Bi1/2)TiO3 ceramics (A=Pb and Sr)}, volume={91}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.1435415}, DOI={10.1063/1.1435415}, number={7}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Lee, Jung-Kun and Hong, Kug Sun and Kim, Chang Kyung and Park, Seung-Eek}, year={2002}, month=apr, pages={4538–4542} }