Abstract

Mgn+1TinO3n+1 (n=2, 3, 4, 5, 6 and 7) microwave ceramics were prepared by the conventional solid-state reaction process. It is found that Mgn+1TinO3n+1 ceramics are mainly composed of MgTiO3 and Mg2TiO4 phases as n value changes from 2 to 6, and the almost pure MgTiO3 phase in the sample with n=7. The increasing n value (2≤n≤7) in Mgn+1TinO3n+1 systems can not only quickly enhance the Q×f value but also effectively inhibit the formation of Mg2TiO4 secondary phase. All the ceramics sintered at temperatures 1300–1380℃ were well densified. The Mgn+1TinO3n+1 ceramic with n=5, sintering at 1360°C for 4h, show the excellent microwave dielectric properties of dielectric constant ~ 16.4, quality factor ~ 382,500GHz (at 7.534GHz) and a negative temperature coefficient of resonant frequency ~ −55.3ppm/◦C.

Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call