6533b833fe1ef96bd129c9ba
RESEARCH PRODUCT
Microwave properties and structure of La–Ti–Si–B–O glass-ceramics for applications in GHz electronics
Clive A. RandallMichael T. LanaganMartin LetzIan M. ReaneyMartun HovhannisyanDamoon Sohrabi Baba HeidaryHuairuo ZhangHubertus BraunHubertus BraunArshad MehmoodRolf JakobyHans-joachim Elmerssubject
010302 applied physicsPermittivityMaterials science02 engineering and technologyDielectricSintered ceramic021001 nanoscience & nanotechnologyMicrostructure01 natural sciencesvisual_art0103 physical sciencesMaterials ChemistryCeramics and Compositesvisual_art.visual_art_mediumDielectric lossCeramicElectronicsComposite material0210 nano-technologyMicrowavedescription
Abstract A dielectric bulk glass-ceramic of the La 2 O 3 –TiO 2 –SiO 2 –B 2 O 3 system is developed which is able to fulfill the requirements for dielectric loading-based mobile communication technologies. It is shown that the given dielectric requirements can be fulfilled by glass-ceramic materials without being dependent on ceramic processing techniques. The material exhibited permittivity values of 20 ɛ r Qf τ f τ f material with a Qf value of 9500 GHz and ɛ r = 21.4 could be achieved at a ceramming temperature T cer = 870 °C. The material is aimed to provide an alternative to existing, commercially used sintered ceramic materials. Further focus is laid on the investigation of the dominant dielectric loss mechanisms in the GHz frequency range and how they are correlated with the microstructure.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-05-01 | Journal of the European Ceramic Society |