Physicists discover theoretical possibility of large, hollow magnetic cage molecules: Although some hollow cage structures have been found, none of them is magnetic. Magnetic properties of the structure are of particular interest because a hollow magnetic structure carrying an embedded atom or molecule can be guided by an external magnetic field and may serve as an effective vehicle for targeted drug delivery.
In a new study... two VCU scientists employing state-of-the-art theoretical methods show that magnetic hollow cages larger than the original C60 fullerene that carry giant magnetic moments are possible...
According to Jena, the pair of VCU researchers demonstrated the magnetic moment of the molecule by focusing on hetero-atomic clusters consisting of transition metal atoms such as cobalt (Co) and manganese (Mn) and carbon (C) atoms. In particular, Co12C6, Mn12C6, and Mn24C18 clusters consisting of 12 cobalt and six carbon atoms, 12 manganese and six carbon atoms, and 24 manganese and 18 carbon atoms, respectively, carry magnetic moments as large as 14, 38 and 70 Bohr magnetons. In comparison, the magnetic moment of an iron (Fe) atom in crystalline iron is 2.2 Bohr magnetons.
No comments:
Post a Comment