采用密度泛函数理论框架下的第一性原理研究了Ti3SnC2的电子结构,利用GGA-PW91基组对Ti3SnC2晶体结构进行了优化,并计算了Ti3SnC2的能带结构、总态密度和各原子的分态密度.对能带和总态密度的计算结果表明,Ti3SnC2在费米能级处电子态密度较高,材料表现出较强的金属性,同时材料的导电性为各向异性.Ti3SnC2各原子的分态密度图的计算结果表明,其导电性主要由Ti2的3d电子决定,Ti1的3d态电子、Sn的5p态电子和C的2p态电子也有少量贡献.决定材料电学性质的主要是Ti的3d、Sn的5p和C的2p态电子的p-d电子轨道杂化,而p-d电子轨道杂化成键则使材料具有比较稳定的结构.
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