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- Title
Low loss (BaSr)(CoNb)O solid solution: phase evolution, microstructure and microwave dielectric properties.
- Authors
Wang, Zhefei; Huang, Baoyu; Wang, Lixi; Fu, Zhenxiao; Zhang, Qitu
- Abstract
(BaSr)(CoNb)O (0 ≤ x ≤ 0.5) microwave dielectric ceramics had been prepared using the solid-state reaction method. The dense microstructures with small grains were obtained. All Sr substituted samples exhibited the perovskite phase. The structure transition from cubic to hexagonal occurred with the increase of x, which led to higher degree of 1:2 ordered structure in the B site. The improved Q × f value was correlated monotonously with the ordering parameters S. The dielectric constant ( ε) and the temperature coefficient of resonant frequency ( τ) could be effectively tuned by tailoring x. A good combination of microwave dielectric properties was obtained for (BaSr)(CoNb)O sintered at 1380 °C: ε = 33.3, Q × f = 87,120 GHz, τ = 4 ppm/°C.
- Subjects
BARIUM compounds synthesis; SOLID state physics; CERAMIC materials synthesis; DIELECTRIC properties of perovskite; MICROSTRUCTURE; SUBSTITUENTS (Chemistry); PERMITTIVITY
- Publication
Journal of Materials Science: Materials in Electronics, 2015, Vol 26, Issue 6, p4273
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-015-2978-3