@Article{NonoCastRangMine:2015:ZnDiRe,
author = "Nono, Maria do Carmo de Andrade and Castro, Pedro Jos{\'e} de and
Rangel, Elizete Gon{\c{c}}alves Lopes and Mineiro, S{\'e}rgio
Luiz",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "ZnO-Nb<sub>2</sub>O<sub>5</sub>-TiO<sub>2</sub> Dielectric
Resonators and Porosity Influence on Dielectric Constant Values",
journal = "Materials Science Forum",
year = "2015",
volume = "820",
pages = "193--198",
note = "{Setores de Atividade: Pesquisa e desenvolvimento
cient{\'{\i}}fico.}",
keywords = "dieletric properties, microwave resonators, porosity, dielectric
constant.",
abstract = "The dielectric resonator (DR) is a ceramic component used in
electronic circuits that can operate in microwave frequency range,
where it plays the role of resonant element and enables the
construction of high selective filters and oscillators. The
dielectric properties of a ceramic resonator are influenced by
their microstructure characteristics as pores amount. This work
shows a study of the influence of pores amount (porosity) on the
dielectric constant values of ceramics from ZnO-Nb2O5-TiO2 system.
Mixtures of Nb2O5, ZnO, and TiO2 powders were compacted by
uniaxial (100 MPa) and isostatic (300 MPa) pressing and sintered
at 1100, 1200, and 1250°C. The experimental dielectric constant
values of the sintered ceramics were corrected to eliminate the
porosity influence. The results showed that the porosity, the type
and quantities of crystalline chemical compounds in the ceramics
influence the dielectric constant values.",
doi = "10.4028/www.scientific.net/MSF.820.193",
url = "http://dx.doi.org/10.4028/www.scientific.net/MSF.820.193",
issn = "0255-5476",
label = "lattes: 9267837198256058 4 NonoCastRangMine:2015:ZnDiRe",
language = "en",
url = "http://www.scientific.net/MSF.820.193",
urlaccessdate = "27 abr. 2024"
}