金刚石顶砧
Grüneisen参数
衍射
德拜模型
结构精修
状态方程
相(物质)
X射线晶体学
粉末衍射
分析化学(期刊)
热力学
黛比
材料科学
钻石
X射线
热的
高压
化学
结晶学
晶体结构
冶金
物理
光学
有机化学
色谱法
作者
et al.,Surendra K. Saxena,Natalia Dubrovinskaia,Sandeep Rekhi,Thierry Le Bihan
标识
DOI:10.2138/am-2000-2-318
摘要
We show that high-quality powder X-ray diffraction data, collected in diamond anvil cells, provide sufficient information for Rietveld refinement and determination of temperature factors. For the first time using a new method based on combination of thermal equation of state and measured mean-square atomic vibrations of high-pressure e-Fe phase, we determine Debye temperatures at pressure up to 300 GPa and temperature over 1000 K. We found that the Grüneisen parameter of e- iron could be described by Anderson's (1967) equation with parameters γ0 = 1.78(6), q = 0.69(10) with fixed V0 = 6.73 cm3/mol
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