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Sintering behavior and microwave dielectric properties of SiO-MgO-AlO-TiO ceramics.
- Source :
- Journal of Materials Science: Materials in Electronics; Apr2016, Vol. 27 Issue 4, p3570-3575, 6p
- Publication Year :
- 2016
-
Abstract
- Sintering behavior, microstructures and microwave dielectric properties of SiO-MgO-AlO-TiO ceramics prepared by solid state sintering method were investigated. The structure, microstructures and microwave dielectric properties of the materials were investigated by X-ray diffraction , scanning electron microscope, energy dispersive spectroscopy and network analyzer. The ceramic can be well densified after sintering at 1200 °C for 3 h in air. The microwave dielectric properties are correlated with the treatment conditions. With the heat-treatment temperature is increased in the range of 1150-1250 °C, the dielectric constant (ε) of the material varies in the range of 4.5-6.25. It increases first and then decreases, with the maximum value of 6.3 appearing at 1200 °C. At the same time, the quality factor (Q × f, Q = 1/tan δ, f = resonant frequency) of the material shows the similar variation, with a maximum value of 27,000 GHz appearing at 1200 °C. Excellent microwave dielectric properties with a near-zero temperature coefficient of resonant frequency ~−6.18 ppm/°C, a relative permittivity ~6.3 and a quality factor ~27,000 GHz (at 9.7 GHz) was obtained. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09574522
- Volume :
- 27
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- Journal of Materials Science: Materials in Electronics
- Publication Type :
- Academic Journal
- Accession number :
- 113779008
- Full Text :
- https://doi.org/10.1007/s10854-015-4193-7