2015 Fiscal Year Final Research Report
Detailed study of the slow magnetic relaxation phenomena of lanthanide-based single molecule magnets
| Project/Area Number |
23350067
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional solid state chemistry
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| Research Institution | Nara Women's University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KATAOKA Yumiko 奈良女子大学, 自然科学系, 助教 (00532194)
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| Project Period (FY) |
2011-04-01 – 2016-03-31
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| Keywords | 希土類錯体 / 分子磁性 / 単分子磁石 / 分子設計 / 磁気異方性 / 配位子場 |
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| Outline of Final Research Achievements |
Paramagnetic complexes which show slow magnetic relaxation phenomena are known as single-molecule magnets (SMMs). In this work, we have proposed the mechanism of the slow relaxation of the magnetization for each lanthanide(III) ion, and synthesized several single-molecular magnets including Ce(III), Nd(III), Tb(III), Dy(III), Er(III), or Yb(III). Due to the characteristic 4f electrons, lanthanide(III) ions have large total angular momentum J and magnetic anisotropy. In the anisotropic ligand field, J ground state splits into Jz sub-states and in some cases, the Jz sub-states which direct along the z-axis were stabilized compared with other sub-state. This situation is known as Ising-type magnetic anisotropy. We have proposed how to design such an Ising-type anisotropy for each Ln(III) ion, and investigated the detail of slow magnetic relaxation features of the synthesized Ln(III) complexes.
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| Free Research Field |
錯体化学
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