Pressure-Induced Amorphous Transition of Li 2 Ge 7 O 15 Crystal

Autor:	Guo-xiang Lan, Liang-chen Chen, Rong-zheng Che, Fengying Li, Li-song Xiu, Hui-cheng Gu, Lei Zhou, Lijun Wang
Rok vydání:	1996
Předmět:	Diffraction Phase transition Materials science Atmospheric pressure business.industry Analytical chemistry General Physics and Astronomy Internal pressure Crystal structure Diamond anvil cell Amorphous solid Optics Orthorhombic crystal system business
Zdroj:	Chinese Physics Letters. 13:534-536
ISSN:	1741-3540 0256-307X
DOI:	10.1088/0256-307x/13/7/015
Popis:	Pressure-induced amorphous transition of Li2Ge7O15 (LGO) crystal has been investigated by using in situ high pressure energy dispersive x-ray diffraction with synchrotron radiation at the pressure up to 21.6 GPa. Diamond anvils were used to generate high pressure. Pressure was measured in terms of the diffraction of Pt as an internal pressure standard. The crystal structure of LGO is an orthorhombic lattice at atmospheric pressure. According to the high pressure x-ray diffraction results, new diffraction lines begin to appear and LGO undergoes an intermediate phase transition at the pressure of 12.9 GPa. But, the diffraction lines disappear wholly and LGO becomes an amorphous phase at the pressure of above 14.8 GPa. This amorphous transition is irreversible.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2503f43e3029403336ad91ce71c0c688 https://doi.org/10.1088/0256-307x/13/7/015 Zobrazit plný text záznamu