期刊
INORGANIC CHEMISTRY
卷 49, 期 17, 页码 8073-8077出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic1011296
关键词
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资金
- STCU [N 5062]
- Spanish MICINN [CSD2007-00010-consolider-ingenio in Molecular Nanoscience, MAT2007-61584, CTQ-2008-06720, CTQ-2005-09385]
- Generalitat Valenciana [PROMETEO/2008/128]
- EU
To explain the single-molecule magnet behavior of the mononuclear complex [(tpaMes)Fe](-) we have developed a model that takes into account the trigonal ligand field splitting of the atomic D-5 term of the Fe(II) ion, and the spin-orbital splitting and mixing of the ligand field terms. The ground ligand field term is shown to be the orbital doublet E-5 possessing an unquenched orbital angular momentum. We demonstrate that the splitting of this term cannot be described by the conventional zero-field splitting Hamiltonian proving thus the irrelevance of the spin-Hamiltonian formalism in the present case. The first-order orbital angular momentum is shown to lead to the strong magnetic anisotropy with the trigonal axis being the easy axis of the magnetization.
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