O comportamento de dielétricos na presença de campos elétricos e a sua descrição em termos da função resposta dielétrica
With the improvement of miniaturization of electronic components and devices occurred in recent years, the use of dielectric materials and the need for accurate information about the dielectric behavior displayed by these materials has increased considerably. In this work is initially presented t...
| Autor principal: | Gentilini, Jean Carlos |
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| Formato: | Dissertação |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2013
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/411 |
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| Resumo: |
With the improvement of miniaturization of electronic components and devices occurred
in recent years, the use of dielectric materials and the need for accurate
information about the dielectric behavior displayed by these materials has increased
considerably. In this work is initially presented the motivations for the study of
dielectric behavior and the modeling of the dielectric response function. From the
theory proposed by Debye and identifying its peculiarities, are exploited some extensions
of this model and analyzed the interpretation of response function proposed by these. Many models used to assume the existence of multiple interactions involving
the dipoles with the dielectric medium, which contributed to the dynamics of the dielectric behavior, only later the multiple interactions won a connection between the
dielectric response observed with the intrinsic properties of the materials. Through the model proposed by Dissado and Hill and assuming experimental data available
in bibliography for some materials, was tested the validity of the response function
resulting from the model, in which was veri ed the ability of the same to adjust the
curves for the real and imaginary components of permittivity to a wide variety of
dielectric materials. From the simulations and analyzes performed, was evident the
dependence of dielectric behavior with temperature, a fact that should be discussed
in future works. |
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