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首页> 外文期刊>Applied Magnetic Resonance >Origin of the Ground Kramers Doublets for Co2+(3d(7)) Ions with the Effective Spin 3/2 Versus the Fictitious 'Spin' 1/2
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Origin of the Ground Kramers Doublets for Co2+(3d(7)) Ions with the Effective Spin 3/2 Versus the Fictitious 'Spin' 1/2

机译：地面kramers的原点用于CO2 +（3D（7））离子，有效旋转3/2与虚拟“旋转”1/2

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摘要

Experimental spectroscopic and magnetic data for Co2+(3d(7)) ions in various systems are reviewed and critically examined. The focus is on Co2+ ions with the electronic spin S=3/2, properties of which may be interpreted using the spin Hamiltonian with the effective S=3/2 or the fictitious spin' S (S)=1/2. Possible distinct ground states of Co2+(3d(7)) ions arising from crystal field energy levels are discussed. Distinctions between the concepts of the effective spin S and the fictitious spin' S are outlined to clarify the terminological confusion encountered in literature. Sample cases of the ground state assignments and options for the spin' S=1/2 origin are considered for better understanding of the Co2+ ions local environment in various systems, including low symmetry cases. Present study is motivated by potential applications of Co2+(S=3/2) complexes exhibiting very large or moderate zero-field splitting as molecular nanomagnets.
机译：对各种系统中的CO2 +（3D（7））离子的实验光谱和磁性数据进行了综述，并重要地检查。 焦点在CO 2 +离子上，具有电子旋转S = 3/2，其特性可以使用旋转Hamiltonian用有效的S = 3/2或虚拟旋转的S）= 1/2来解释。 讨论了由晶场能量水平产生的CO2 +（3D（7））离子的可能明显的接地状态。 有效自旋S和虚拟旋转的概念之间的区别概述以阐明文学中遇到的术语困惑。 考虑用于更好地理解各种系统中的CO2 +离子本地环境，包括低对称性情况，所以考虑更好地理解地面= 1/2原产地的样本情况。 目前的研究通过CO 2 +（S = 3/2）络合物的潜在应用，其表现出非常大或中等零场分裂作为分子纳米磁镜。

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