计算了Fe掺杂ZnO体系几何结构和电子结构,分析了掺杂对ZnO晶体的电子结构、磁矩、电子态密度、磁学性质的影响.所有计算都是基于密度泛函理论(DFT)框架下的第一原理平面波赝势方法.计算结果表明:Fe3+并不能占据准确的Zn2+位置,而是沿c轴方向位移了一段距离Δz,这是引起Zn1-xFexO铁磁性的主要原因,理论计算结果与试验结果吻合.
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