Synthesis and Magnetic Properties of a Series of Octanuclear
[Fe<sub>6</sub>Ln<sub>2</sub>] Nanoclusters
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Abstract
The
reaction of polydentate ligand Bis-tris propane {(CH<sub>2</sub>OH)<sub>3</sub>CNH(CH<sub>2</sub>)<sub>3</sub>NHC(CH<sub>2</sub>OH)<sub>3</sub>} with Ln(NO<sub>3</sub>)<sub>3</sub>·6H<sub>2</sub>O
and Fe<sub>3</sub>O precursor resulted in the formation of a series
of Fe<sub>6</sub>Ln<sub>2</sub> nanoclusters. Magnetic measurements
indicate that the Fe<sub>6</sub> core exhibits ferrimagnetic behavior,
and slow magnetic relaxation was observed in Fe<sub>6</sub>Dy<sub>2</sub> and Fe<sub>6</sub>Tb<sub>2</sub>
