摘要
在室温下通过同步辐射X射线衍射和DAC高压技术,进行了天然矿物硬玉(NRAlSi_2O_6)的原位超高压结构研究,发现样品经过了C2/c-P2_1/c-Pbcn系列的相变,最后分解为CaFe_2O_4结构的NaAlSiO_4和斯石英SiO_2。
The high-pressure room-temperature behavior of natural jadeite(NaAlSi_2O_6) has been studied by in situ energy dispersive X-ray diffraction measurements with synchrotron radiation and diamond anvil cell. It is found that the structure of jadeite is changed from C2/c to P2_1/c, then to Pbcn, and finally jadeite is transformed into NaAlSiO_4 (CaFe_2O_4 type structure) plus stishovite at high pressure.
出处
《核技术》
CAS
CSCD
北大核心
2004年第12期923-925,共3页
Nuclear Techniques
基金
自然科学基金(10299040)
国家杰出青年基金(10125523)
国家自然科学基金(40272023)
关键词
硬玉
压致相变
Jadeite, Pressure-induced phase transition
