Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10155373 | Ceramics International | 2018 | 15 Pages |
Abstract
A series of (ZrTi)1-x(Mg1/3Sb2/3)2xO4 (0.04â¯â¤â¯xâ¯â¤â¯0.36) ceramics were successfully synthesized through the conventional solid-state processing. Appropriate content of CuO was added as sintering aids to promote the density of ceramics. The XRD analysis revealed that the main crystalline phase of ceramics sintered at optimal temperature belonged to α-PbO2-type structure. Raman spectroscopy and far infrared reflectivity (FIR) spectra were employed to study the phonon modes of ceramics, which explained the relationship between microwave dielectric properties and structure. It is interesting that the Ïf are near-zero (+6.6 ~ â4.6â¯ppm/°C) and meanwhile the QÃf are relatively high (29,000-41,800â¯GHz) for samples with x in a very wide range of 0.10-0.36. In this range, their dielectric constants (εr) can be adjustable from 35.4 to 24.4. The results demonstrated this ceramic system is a potential candidate for microwave dielectric applications requiring an adjustable dielectric constants and near zero Ïf.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Hao Shi, Qiuyun Fu, Geng Wang, Lu Zhang, Zhiping Zheng, Wei Luo, Fan Tian, Chaohong Wang, Tao Yang,