Abstract:This work presents a study on pressure-induced amorphization (PIA) in β-LiAlGeO4 using synchrotron radiation X-ray diffraction and Raman laser spectroscopy respectively under high pressure up to 29.7and20.3 gigapascals (GPa). It is the first time that amorphous structure under compression was observed in LiAlGeO4 by the results revealed that at300K β-LiAlGeO4 underwent progressive amorphization at pressures above 11.9GPa and became completely amorphous above 14.5 GPa. Simultaneously

The Raman data shows the transformation in the 15 GPa. After the release of pressure the system was recovered as an amorphous state and did not retain the so-called structural memory. Then give a bulk modulus and the Grüneisen parameters I of LiAlGeO4.