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摘要: 采用X射线粉末衍射和同步辐射能散X射线衍射技术，对LiB3O5（LBO）晶体进行了压致非晶化相变的研究，压力达45.1 GPa。实验结果表明，LBO存在两个中间相变，压力分别为5 GPa和15.8 GPa。而当压力增加到25~31.6 GPa时，LBO出现非晶态，这个非晶化相变是不可逆的。Abstract: Pressure induced amorphous transition of LiB3O5 (LBO) has been investigated by using in situ high pressure X-ray powder diffraction and energy dispersive X-ray diffraction with synchrotron radiation at the pressure up to 45.1 GPa. According to the experimental results, LBO undergoes two intermediate phase transitions at pressure of about 5 and 15.8 GPa, respectively. But LBO crystal becomes an amorphous phase in the pressure range of about 25～31.6 GPa and this amorphous transition is irreversible.
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