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- Title
Effect of adding Ti<sub>2</sub>Nb<sub>10</sub>O<sub>29</sub> on the dielectric properties of MgNb<sub>2</sub>O<sub>6</sub> microwave dielectric ceramics.
- Authors
Huang, Jiajun; Li, Yueming; Li, Kai; Sun, Yi; Shen, Zongyang; Wang, Zhumei
- Abstract
MgNb2O6- x wt% Ti2Nb10O29 (x = 0, 2, 4, 6, 8, 10) microwave dielectric ceramics with near zero temperature coefficient of resonance frequency τf were prepared by the solid-state reaction technique. The effects of Ti2Nb10O29 incorporation on the microstructure and dielectric properties of MgNb2O6 were investigated to probe the formation and sintering behavior of each phase. The results show that the appropriate Ti2Nb10O29 addition can promote the sintering of MgNb2O6 and improve the density of the ceramics. The quality factor Q × f was decreased with the increasing of Ti2Nb10O29, but, at the same time, the dielectric constant εr and the temperature coefficient of resonance frequency τf were improved, which is consistent with the theoretical calculation. When the addition amount x is equal to 4, the ceramic sample has the best microwave dielectric properties after sintering at 1280 °C for 4 h: εr = 21.72, Q × f = 76,850 GHz, τf = -9.6 × 10–6/°C.
- Subjects
DIELECTRICS; QUALITY factor; MICROWAVES; PERMITTIVITY; CERAMICS; DIELECTRIC properties; DIELECTRIC materials; LEAD titanate
- Publication
Journal of Materials Science: Materials in Electronics, 2022, Vol 33, Issue 36, p27014
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-022-09365-5