摘要
利用金刚石对顶压砧(DAC)对具有反尖晶石结构的透明导体氧化物Zn2SnO4(ZTO)纳米线进行了原位高压同步辐射角散X射线衍射(ADXRD)研究。结果发现:在压力为12.9GPa附近,晶体的对称性降低,并发生晶体结构相变,产生中间过渡相;当压力为32.7GPa时,发生高压相变,形成高压相。在样品加压前后,纳米线的形貌发生了很大的变化。通过Birch-Murnaghan方程,拟合得到B′0=4时的体弹模量B0=(168.6±9.7)GPa。
In situ high-pressure angle dispersive X-ray diffraction (ADXRD) experiments on inverse spinel Zn2SnO4 (ZTO) nanowires were carried out in a diamond anvil cell (DAC) at room temperature. The crystal symmetry becomes lower at around 12.9 GPa and an intermediate phase occurs. At about 32.7 GPa, a phase transition happens and a high-pressure phase appears. After high pressure treatment,the nanowires are broken into nanorods. Through fitting the Birch-Murnaghan equation, we obtained the bulk modulus B0= (168.6±9.7) GPa for the inverse spinel ZTO nanowires, assuming its first order derivative B'0 = 4 at ambient pressure.
出处
《高压物理学报》
EI
CAS
CSCD
北大核心
2009年第5期327-331,共5页
Chinese Journal of High Pressure Physics
基金
国家自然科学基金(10774168
50621061)
国家重点基础研究项目(2005CB623602
2007CB925003)