Molecular metals with ferromagnetic interaction between localized magnetic moments

New charge-transfer salts (EDO-TTFI 2) 2M(mnt) 2 (M=Ni,Pt) are the first organic metals with strong ferromagnetic interactions. These salts consist of one-dimensional chains of EDO-TTFI 2 donors and M(mnt) 2 acceptors aligned in parallel to each other. The metallic conductivity is due to the one dim...

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Bibliographic Details
Published in:Solid state communications 2000-01, Vol.116 (12), p.661-664
Main Authors: Nishijo, J., Ogura, E., Yamaura, J., Miyazaki, A., Enoki, T., Takano, T., Kuwatani, Y., Iyoda, M.
Format: Article
Language:English
Subjects:
A. Magnetically ordered materials
A. Metals
A. Organic crystals
Condensed matter: electronic structure, electrical, magnetic, and optical properties
D. Electronic states (localized)
D. Electronic transport
Electron states
Exact sciences and technology
Exchange and superexchange interactions
Magnetic properties and materials
Magnetically ordered materials: other intrinsic properties
Metal-insulator transitions and other electronic transitions
Physics
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Summary:New charge-transfer salts (EDO-TTFI 2) 2M(mnt) 2 (M=Ni,Pt) are the first organic metals with strong ferromagnetic interactions. These salts consist of one-dimensional chains of EDO-TTFI 2 donors and M(mnt) 2 acceptors aligned in parallel to each other. The metallic conductivity is due to the one dimensional chain of EDO-TTFI 2, and a metal–insulator transition occurs at about 90 K. Localized spins of M(mnt) 2 behave as a one-dimensional ferromagnet, which interact with conduction electrons. The origin of the ferromagnetic interactions are orthogonality of the molecular orbitals of M(mnt) 2 and spin polarization effect which is explained by McConnell's first model.
ISSN:0038-1098
1879-2766
DOI:10.1016/S0038-1098(00)00406-3