Dielectric Properties of 0.9Ag^sub 0.9^Li^sub 0.1^NbO^sub 3^ - 0.1Bi^sub 0.5^K^sub 0.5^TiO^sub 3^ Ceramics

New ferrielectric ... ceramics have been obtained. At room temperature ceramics exhibit perovskite structure, which is close to rombohedral-tetragonal phase boundary. The dielectric properties of ceramics were investigated in wide frequency range from 20 Hz to 1 GHz at temperatures 200 K-750 K. ......

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Bibliographic Details
Published in:Ferroelectrics 2014-01, Vol.463 (1), p.99
Main Authors: Pozingis, J, Macutkevic, J, Grigalaitis, R, Banys, J, Lupascu, D C
Format: Article
Language:English
Subjects:
Ceramics
Crystal structure
Dielectric properties
Ferroelectrics
Perovskite
Online Access:Get full text
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Summary:New ferrielectric ... ceramics have been obtained. At room temperature ceramics exhibit perovskite structure, which is close to rombohedral-tetragonal phase boundary. The dielectric properties of ceramics were investigated in wide frequency range from 20 Hz to 1 GHz at temperatures 200 K-750 K. ... ceramics exhibits a first order mixed order-disorder and displacive ferroelectric phase transition at TC = 430 K. The phase transition dynamics is caused by relaxation soft mode at frequencies below 1 GHz and soft phonon mode at higher frequencies. In ferroelectric phase an additional dielectric dispersion is observed, which could be attributed to dipolar glass relaxation. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0015-0193
1563-5112