利用分子动力学的计算机模拟方法,分别采用Tersoff-Brenner势和Tersoff势研究了金刚石的振动特性及空位对金刚石振动特性的影响.结果表明,Tersoff势不能准确地描述金刚石的振动特性,而用Tersoff-Brenner势计算得到的金刚石态密度和拉曼谱图与实验结果符合得很好.空位使金刚石的振动特性发生了变化,在态密度和拉曼谱中金刚石峰的右边出现一个较强峰.
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