根據晶體場理論，利用3d9離子在四角對稱(伸長八面體)中自旋哈密頓參量g因子的四階微擾公式以及超精細結構常數A因子的三階微擾公式，對摻Cu2+的LaSrAlO4晶體的自旋哈密頓參量作出了理論分析。其中的四角晶場參量Ds、Dt由重疊模型和雜質中心的局部結構計算，A因子公式中的芯區極化常數κ≈0.286。所得到的計算值與實驗符合較好，并從理論上確定了A//為負值。

On the basis of the perturbation formulae of the g-factors (fourth-order) and the hyperfine structure constants (third-order) for a 3d9 ion in tetragonal symmetry (elongated octahedra), the spin Hamiltonian parameters for the Cu2+-doped LaSrAlO4 crystal are theoretically investigated. In the calculations, the tetragonal field parameters Ds and Dt are determined from the superposition model and the local structure of the impurity center; and the core polarization constant κ ≈0.286. Based on the studies, it is found that the calculated values show good agreement with the experimental data. In addition, the negative sign of A// is also determined theoretically.