| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1529199 | Materials Science and Engineering: B | 2013 | 5 Pages |
The microwave dielectric properties and microstructures were investigated in the (1−x)Mg(Zr0.05Ti0.95)O3–xSrTiO3 (hereafter referred to as (1−x)MZT–xST) system. The compounds were prepared via the conventional solid-state reaction. Compositions in the (1−x)Mg(Zr0.05Ti0.95)O3–xSrTiO3 system were designed to compensate the negative temperature coefficient of the resonant frequency of Mg(Zr0.05Ti0.95)O3. The values displayed nonmonotonic mixture-like behavior, because the TiO2 phase was formed in the MZT composite ceramics with increasing x. A close zero τf of 0.2 ppm/°C could be achieved at 0.96MZT–0.04ST with ɛr = 20.8 and Q × f = 257,000 GHz.
► The microwave dielectric properties of (1−x)Mg(Zr0.05Ti0.95)O3–xSrTiO3 system have been discussed. ► The dielectric constant and τf increased; nevertheless, the Q × f decreased with an increase in x. ► Second phases were formed and affected the microwave dielectric properties of (1−x)MZT–xST system. ► ɛr of 20.8, Q × f of 257,000, and τf of 0.2 ppm/°C were obtained for the 0.06Mg(Zr0.05Ti0.95)O3–0.04SrTiO3 ceramics. ► Due to high-quality factor and near-zero τf, MZT–ST demonstrate a good potential for use in microwave devices.
