Spin correlation and relaxational dynamics in molecular-based single-chain magnets

• Kishine Jun-ichiro

• Watanabe Tomonori

• Deguchi Hiroyuki

• Mito Masaki

• Sakai Toru

• Tajiri Takayuki

• Yamashita Masahiro

• Miyasaka Hitoshi

抄録

We report the combined measurements of the dc susceptibility 0, the ac susceptibility , 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 0, the ac susceptibility , and the 19F-NMR relaxation rate T in a consistent manner.

収録刊行物

• Physical review B. Condensed matter and materials physics

  Physical review B. Condensed matter and materials physics 74 (22), 224419-1-224419-7, 2006-12-15

  Published by the American Physical Society through the American Institute of Physics

詳細情報

• CRID: 1572824502466097664
• NII論文ID: 120002440812
• NII書誌ID: AA11187113
• ISSN: 10980121
• Web Site: http://hdl.handle.net/10228/634
• 本文言語コード: en
• データソース種別:
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