@Article{NonoCastRangMine:2016:GaZnDi,
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 = "Ga2O3-doped ZnO-Nb2O5-TiO2 dielectric resonators for terrestrial
and space telecommunications applications",
journal = "Materials Science Forum",
year = "2016",
volume = "869",
pages = "79--84",
note = "Brazilian Conference on Materials Science and Engineering, 21.
(CBECIMAT), Cuiab{\'a} MT, 9-13 Nov. 2014.",
keywords = "Ceramic microstructures, Dielectric constant, Dielectric
resonators, Microwave dielectric properties.",
abstract = "Dielectric ceramics find application as dielectric resonators
(DRs) in communications systems operating at microwave
frequencies. RDs for this application require a unique set of
properties: high value of the dielectric constant, low dielectric
loss and high frequency stability. This paper presents an
investigation of the correlation between the dielectric
properties, the characteristics of microstructure and the
crystalline phases of Ga2O3-doped ZnO-Nb2O5-TiO2 ceramic system.
The ceramics sintered at 1200 °C were characterized as for
density, crystalline phases, microstructure and microwave
dielectric properties. The results showed that these dielectric
ceramics, obtained from the TiO2 anatase crystalline structure,
present dielectric constant and quality factor (Q) values
appropriate for their use as dielectric resonators in microwave
circuits. According to the experiments, as the gallium doping has
raised, the dielectric constant increased, the Q factor decreased
and the temperature coefficient had a tendency to decrease to a
certain extent.",
doi = "10.4028/www.scientific.net/MSF.869.79",
url = "http://dx.doi.org/10.4028/www.scientific.net/MSF.869.79",
issn = "0255-5476",
language = "en",
urlaccessdate = "27 abr. 2024"
}