| d~8(D_4)EPR理论及NiN_4X_2型化合物光磁性质研究 |
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| 引用本文： | 喻一心,易先玉,谢军楷.d~8(D_4)EPR理论及NiN_4X_2型化合物光磁性质研究[J].四川师范大学学报(自然科学版),1991(5). |
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| 作者姓名： | 喻一心 易先玉 谢军楷 |
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| 作者单位： | 湖南湘西民族教师进修学院，四川师范大学化学系，四川师范大学化学系 |
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| 基金项目： | 国家自然科学基金资助课题 |
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| 摘 要： | 本文利用赵等人提出的O_h点群表象方块准对角型简化强场方案及全组态混合EPR理论方法,建立了d~8(D(?))完全强场能量矩阵及相应的EPR理论,由对角化能量矩阵的特征值和特征矢量以及EPR参量的计算公式,对NiN_4X_2型化合物中Ni~(2+)的吸收谱.顺磁g因子以及基态零场分裂参量D进行了统一的理论计算,计算结果与实验一致.分析表明.NiN_4X_2型化合物中Ni~(2+)离子的配位态近似属D_4点群对称,其光磁性质密切相关,可统一用一组光谱参量描述,基态零场分裂主要源于配位晶场的低对称畸变.
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| 关 键 词： | d~8(D_4)EPR理论 NiN_4X_2型化合物 光磁性质 |
AN EPR THEORY FOR d~8(D_4) AND A STUDY OF THE OPTICAL AND MAGNEIC PROPERTIES NiN_4X_2 |
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| Yu Yixing Yi Xianyu Xie Junkai.AN EPR THEORY FOR d~8(D_4) AND A STUDY OF THE OPTICAL AND MAGNEIC PROPERTIES NiN_4X_2[J].Journal of Sichuan Normal University(Natural Science),1991(5). |
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| Authors: | Yu Yixing Yi Xianyu Xie Junkai |
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| Institution: | Department of chemistry |
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| Abstract: | The comolete strong field matrices and an EPR theory of the complete configuration mixing for d~8(D_4) are established in Oh point group representation. By means of the eigenvalues and eigenvectors these matrices, the optical spectra, the paramag- netic g-factors and the ground state zero field splitting parameters D for Ni~(2+)in NiN_4X_2 type cmpouds are calculated theoretical- ly. These results are in agreement with the experimental values. it is shown that the crystal fields surrounding Ni~(2+) ions are close to D_4 point guoup symmetry.thus the origin of the optical and magnetic property of nin_4X_2 can be well understood. |
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| Keywords: | d~8(D_4) EPR theory NiN_4X_2 type compounds optical and magnetic properties |
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