| Autor: |
Geddes, B., Artemev, A. |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; May2009, Vol. 105 Issue 9, p094104-094109, 5p, 2 Color Photographs, 2 Graphs |
| Abstrakt: |
The phase field model was used to simulate the domain structure and polarization versus applied field hysteresis curves of a composite layer consisting of a ferroelectric matrix and spherical dielectric inclusions. Simulation results demonstrate that the introduction of dielectric inclusions into the ferroelectric matrix can lead to the stabilization of the polydomain structure in a wide range of applied fields. As a result a significant increase in susceptibility can be obtained due to the composite structure formation, which causes the addition of an extrinsic contribution into susceptibility. The composite structure can produce a number of different partially switched (partially poled) states with different values of the remnant polarization that are stable in wide ranges of the applied field producing a close to linear dielectric response with high susceptibility. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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