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不同粒径纳米晶硫化锌的高压结构相变研究

DOI: 10.11858/gywlxb.2007.01.005, PP. 29-34

Keywords: 同步辐射,纳米晶硫化锌,高压,结构相变

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Abstract:

应用原位能量色散X射线散射和金刚石对顶砧技术,对纳米晶ZnS进行了高压结构相变研究。初始相为纤锌矿结构的10nm和3nm硫化锌分别在16.0GPa和16.7GPa时转变为岩盐矿结构,相变压力均高于纤锌矿结构的体材料硫化锌。该相变为一可逆的结构相变。应用大型科学计算软件MaterialsStudio(MS)计算了纳米晶ZnS的状态方程,根据Birch-Murnaghan方程拟合了纳米晶ZnS的零压体模量,得到的零压体模量高于相应体材料的零压体模量,表明纳米晶ZnS较难压缩。

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