ZHANG Yingchun (1969-), male, Ph.D., Professor. E-mail: zycustb@163.com
The perovskite and perovskite-like microwave dielectric ceramics have some excellent dielectric properties due to their unique crystal structure. They play an important role in microwave communication technology and can be widely used in satellite communications, radar, and civil mobile communication. In this review, we summarized recent work on the microwave dielectric properties of perovskite and perovskite-like microwave dielectric ceramics. The crystal structure and microwave dielectric properties of a series of perovskite and perovskite-like compounds were discussed. The effects of ion substitution, combined modification and low-temperature sintering on the dielectric properties of the ceramics were analyzed. Finally, the existing main problems were summarized and the future development direction was prospected.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |