Behaviors of Zn2GeO4 under high pressure and high temperature

• 作者: 彭放 晏小智 李文涛 李晓东 杨淑雯 胡启威 贺端威 雷力
• 来源期刊: 中国物理B（英文版）
• 关键词: pressure-induced amorphization high pressure and high temperature phase transition x-ray diffraction
• 年，卷（期）: 2016,（7）
• 页码范围: 076101-1-076101-6
• 页数: 1页
• 语种: 英文
• DOI: 10.1088/1674-1056/25/7/076101

摘要

The structural stability of Zn2GeO4 was investigated by in-situ synchrotron radiation angle dispersive x-ray diffrac-tion. The pressure-induced amorphization is observed up to 10 GPa at room temperature. The high-pressure and high-temperature sintering experiments and the Raman spectrum measurement firstly were performed to suggest that the amor-phization is caused by insufficient thermal energy and tilting Zn–O–Ge and Ge–O–Ge bond angles with increasing pressure, respectively. The calculated bulk modulus of Zn2GeO4 is 117.8 GPa from the pressure-volume data. In general, insights into the mechanical behavior and structure evolution of Zn2GeO4 will shed light on the micro-mechanism of the materials variation under high pressure and high temperature.