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New Mn12 single-molecule magnets from edge-sharing bioctahedra
Muralee Murugesu1, Wolfgang Wernsdorfer, Khalil A Abboud
1Department of Chemistry, University of Florida, Gainesville, Florida 32611-7200, USA.
Dalton Transactions (Cambridge, England : 2003)
|May 12, 2006
Summary
Dodecanuclear manganese (Mn) clusters exhibit single-molecule magnetism. These clusters show hysteresis loops dependent on scan rate and temperature, confirming their magnetic behavior.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Magnetochemistry
Background:
- Single-molecule magnetism (SMM) is a field focused on molecules that behave as tiny magnets.
- Manganese (Mn) clusters are of interest due to their potential magnetic properties.
Purpose of the Study:
- To investigate the magnetic behavior of dodecanuclear Mn clusters.
- To determine if these clusters exhibit single-molecule magnetism.
Main Methods:
- Synthesis of dodecanuclear Mn clusters based on edge-sharing bioctahedra.
- Magnetic measurements including scan-rate- and temperature-dependent hysteresis loops.
Main Results:
- The dodecanuclear Mn clusters displayed hysteresis loops.
- The observed hysteresis loops were dependent on both the scan rate and temperature.
- These characteristics are indicative of single-molecule magnetism behavior.
Conclusions:
- Dodecanuclear Mn clusters based on edge-sharing bioctahedra exhibit single-molecule magnetism.
- The observed magnetic behavior is consistent with theoretical predictions for SMMs.
