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EPR in the molecular magnet
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View: Figures


Image of FIG. 1.
FIG. 1.

Relative arrangement of the local axes of two spatially nonequivalent molecules in the crystal (a). The segments show the six-fold axes of the hexagon. The turn angle between these directions is 51.52°. The projection of the crystal structure (view along the axis) (b). To make it easier to understand the picture the Me and DMF groups of the molecular complex are not shown.

Image of FIG. 2.
FIG. 2.

View of the absorption spectrum of a single crystal at with the external magnetic field oriented along the axial axis of one of two centers and perpendicular to it (b). DPPH—signal of a diphenyl-picryl-hydrazyl reference sample.

Image of FIG. 3.
FIG. 3.

Angular dependence of the resonance fields of the interlevel transitions for one of the nonequivalent paramagnetic centers of a single crystal. The rotation of the external magnetic field was performed in the turn plane of the local axes of two magnetic molecules. The different symbols denote allowed interlevel transitions for two different magnetic centers. The solid and dashed lines indicated the computational results for the model with , and the parameters and .

Image of FIG. 4.
FIG. 4.

Frequency-field curves of the resonance fields of interlevel transitions of a magnetic center with an ground state and orientation of the external magnetic field along the hexagonal axis of the molecule. The solid lines show the computational results obtained on the basis of the axial model with the parameters and .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: EPR in the molecular magnet {Cu6[(MeSiO2)6]2}⋅6DMF