Spin correlation and relaxational dynamics in molecular-based single-chain magnets
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We report the combined measurements of the dc susceptibility X0, the ac susceptibility X, and the NMR relaxation rate T for the molecular-based heterometallic single-chain magnet [Mn(saltmen)]2[Ni(pao)2(py)2](PF6)2. At low temperatures, this system is well described by a one-dimensional array of effective spin S=3 chains comprising the MnIII-NiII-MnIII trimers and treated as the S=3 Ising chain with the single-ion term (Blume-Capel model). Using the exact solution of the model and based on the picture that the random motion of the local domain walls dominates the low-temperature spin dynamics, we succeeded in reproducing the experimental results of the dc susceptibility X0, the ac susceptibility X, and the 19F-NMR relaxation rate T in a consistent manner.
収録刊行物
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- Physical review B. Condensed matter and materials physics
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Physical review B. Condensed matter and materials physics (74), 224419-1-224419-7, 2006-12-15
Published by the American Physical Society through the American Institute of Physics
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詳細情報 詳細情報について
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- CRID
- 1572824502466100864
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- NII論文ID
- 120002440846
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- NII書誌ID
- AA11187113
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- ISSN
- 10980121
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- Web Site
- http://hdl.handle.net/10228/668
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- 本文言語コード
- en
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- データソース種別
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