...
首页> 外文期刊>Japanese journal of applied physics >Comparative Study of Multiplet Structures of Mn~(4+) in K_2SiF_6, K_2GeF_6, and K_2TiF_6 Based on First-Principles Configuration-Interaction Calculations
【24h】

Comparative Study of Multiplet Structures of Mn~(4+) in K_2SiF_6, K_2GeF_6, and K_2TiF_6 Based on First-Principles Configuration-Interaction Calculations

机译:基于第一性构型-相互作用计算的K_2SiF_6,K_2GeF_6和K_2TiF_6中Mn〜(4+)多重结构的比较研究

获取原文
获取原文并翻译 | 示例
           

摘要

We performed first-principles configuration-interaction calculations of multiplet energies for Mn~(4+) in K_2SiF_6, K_2GeF_6, and K_2TiF_6 crystals. The results indicate that corrections based on a single-electron calculation are effective for the prediction of ~4A_2→~4T_2 and ~4A_2→~4T_(1a) transition energies, while such corrections are not necessary for the prediction of the ~4A_2→~2E transition energy. The cluster size dependence of the multiplet energies is small. However, the ~4A_2→~2E transition energy is slightly improved by using larger clusters including K ions. The theoretical multiplet energies are improved further by considering the lattice relaxation effect. As a result, the characteristic multiplet energy shifts depending on the host crystal are well reproduced without using any empirical parameters. Although K_2GeF_6 and K_2TiF_6 have lower symmetry than K_2SiF_6, the results indicate that the variation of the multiplet energy is mainly determined by the Mn-F bond length.
机译:我们对K_2SiF_6,K_2GeF_6和K_2TiF_6晶体中Mn〜(4+)的多重能量进行了第一性原理配置-相互作用计算。结果表明,基于单电子计算的校正对于〜4A_2→〜4T_2和〜4A_2→〜4T_(1a)跃迁能的预测有效,而对于〜4A_2→~~的预测能量则不需要这种校正。 2E过渡能量。多重能量的团簇尺寸依赖性小。但是,通过使用包含K离子的较大簇,〜4A_2→〜2E跃迁能略有改善。通过考虑晶格弛豫效应,可以进一步提高理论上的多重能。结果,无需使用任何经验参数就可以很好地再现取决于基质晶体的特征多重能移动。尽管K_2GeF_6和K_2TiF_6的对称性低于K_2SiF_6,但结果表明,多重能的变化主要由Mn-F键长决定。

著录项

  • 来源
    《Japanese journal of applied physics》 |2012年第2issue1期|p.022604.1-022604.6|共6页
  • 作者单位

    Department of Chemistry, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan;

    Department of Chemistry, Kwansei Gakuin University, Sanda, Hyogo 669-1337, Japan;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号