TU Darmstadt / ULB / TUbiblio

Strong domain configuration dependence of the nonlinear dielectric response in (K,Na)NbO3-based ceramics

Huan, Yu and Wang, Xiaohui and Li, Longtu and Koruza, Jurij (2015):
Strong domain configuration dependence of the nonlinear dielectric response in (K,Na)NbO3-based ceramics.
In: Applied Physics Letters, (107), ISSN 00036951, [Online-Edition: http://dx.doi.org/10.1063/1.4936165],
[Article]

Abstract

The nonlinear dielectric response in (Na0.52 K0.4425 Li0.0375)(Nb0.92-x Tax Sb0.08)O3 ceramics with different amounts of Ta was measured using subcoercive electric fields and quantified by the Rayleigh model. The irreversible extrinsic contribution, mainly caused by the irreversible domain wall translation, was strongly dependent on the domain configuration. The irreversible extrinsic contributions remained approximately the same within the single-phase regions, either orthorhombic or tetragonal, due to the similar domain morphology. However, in the polymorphic phase transition region, the domain wall density was increased by minimized domain size, as observed by transmission electron microscopy. This resulted in constrained domain wall motion due to selfclamping and reduced the irreversible extrinsic contribution. @2015 AIP Publishing LLC.

Item Type: Article
Erschienen: 2015
Creators: Huan, Yu and Wang, Xiaohui and Li, Longtu and Koruza, Jurij
Title: Strong domain configuration dependence of the nonlinear dielectric response in (K,Na)NbO3-based ceramics
Language: English
Abstract:

The nonlinear dielectric response in (Na0.52 K0.4425 Li0.0375)(Nb0.92-x Tax Sb0.08)O3 ceramics with different amounts of Ta was measured using subcoercive electric fields and quantified by the Rayleigh model. The irreversible extrinsic contribution, mainly caused by the irreversible domain wall translation, was strongly dependent on the domain configuration. The irreversible extrinsic contributions remained approximately the same within the single-phase regions, either orthorhombic or tetragonal, due to the similar domain morphology. However, in the polymorphic phase transition region, the domain wall density was increased by minimized domain size, as observed by transmission electron microscopy. This resulted in constrained domain wall motion due to selfclamping and reduced the irreversible extrinsic contribution. @2015 AIP Publishing LLC.

Journal or Publication Title: Applied Physics Letters
Number: 107
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Nonmetallic-Inorganic Materials
Date Deposited: 26 Nov 2015 09:58
Official URL: http://dx.doi.org/10.1063/1.4936165
Identification Number: doi:10.1063/1.4936165
Export:

Optionen (nur für Redakteure)

View Item View Item