LIU Feng (1990-), male, Ph.D. E-mail: f.liu@siat.ac.cn
The structure of melt is very important for the growth of high-quality large-size functional oxides, which are such materials widely used in military, high-tech manufacturing, and medical treatment. The structures for three typical functional oxide melts, such as oxide alumina, yttrium aluminum garnet, and lithium niobate have been reviewed in this paper. Several coordination units formed by cations and anions exist in each melt, and the coordination number, bond length, spatial structure and the percentage of various coordination units in the melts are obviously different from those in the corresponding crystals. The properties of these structure units are dependent on temperature. The coordination units connected with each other by the nodes. Both the cations and anions in the melts can be acted as nodes to connect the coordination units (polyhedron) in the melts. Phase transition is the kinetic process of melt structure transformation. Therefore, in addition to the melt structure, revealing the melt structure evolution kinetic process will help to understand the growth mechanism of large-sized crystals from a deep level.
| 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 |