Sintering behaviors and microstructural characteristics of La(Co 1/2Ti1/2)O3 ceramics were investigated. The La(Co1/2Ti1/2)O3 ceramics were prepared by the conventional solid-state route. Doping with B2O3 (up to 0.75 wt%) can effectively promote the densificaron of La(Co1/2Ti 1/2)O3 ceramics at a low sintering temperature. With B2O3 addition, the sintering temperature of La(Co 1/2Ti1/2)O3 can be effectively reduced from 1440 to 1230-1350°C. At 1350°C/6 h, La(Co1/2Ti 1/2)O3 ceramic with 0.25 wt% B2O3 addition possesses a dielectric constant (εr) of 30, a Q × f value of 64,600 GHz (at 8 GHz) and a temperature coefficient of resonant frequency (τf) of -48 ppm/°C. The B2O 3-doped La(Co1/2Ti1/2)O3 ceramic is applicable in microwave devices requiring low sintering temperature.
|Number of pages||3|
|Journal||Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers|
|Publication status||Published - 2006 Nov 15|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)