采用第一性原理计算研究了Fe{O(CH2CO2)2}(H2O)2(NO3)晶体的电子结构及磁性。该计算采用密度泛函理论(DFT)结合投影缀加波(PAW)方法。计算结果表明,化合物Fe{O(CH2CO2)2}(H2O)2(NO3)具有反铁磁基态,这种反铁磁相互作用来自于最近邻的铁离子;每个分子的自旋磁矩是4.99μB,这和实验结果也是相吻合的。
The crystal electronic structure and magnetic properties of [Fe{O(CH2CO2)2}(H2O)2(NO3)] by first-principles calculation were investigated.The calculation was based on density-functional theory combined with the projector augmented wave method.The results suggest that the compound [Fe{O(CH2CO2)2}(H2O)2(NO3)] has an antiferromagnetic ground state.The antiferromagnetic interaction between the adjacent Fe ions is found.The calculation reveals that the spin magnetic moment per molecular is 4.99 μB,which is in good agreement with experiment result.