Enhanced magnetic anisotropy of Mn 12-acetate

Department of Chemistry, Texas A&M University, College Station, Texas, United States
Journal of Magnetism and Magnetic Materials (Impact Factor: 1.97). 06/2006; 301(1):31-36. DOI: 10.1016/j.jmmm.2005.06.005
Source: arXiv


Thin films of the single molecule magnet [Mn12O12(CH3COO)16(H2O)4]·2CH3COOH·4H2O (Mn12-acetate) have been fabricated on a Si-substrate by the dip-and-dry method, a simple and robust technique. Atomic force microscopy and X-ray photoelectron spectroscopy characterizations reveal that homogeneous, thin films of a few molecular layers with smoothness at the molecular level are deposited. Significant changes in magnetic properties of Mn12-acetate exposed to the same solvent were observed in zero field-cooled and field-cooled magnetization, as well as AC-susceptibility measurements. The blocking temperature was found to increase to TB>10K at low magnetic fields, indicating an enhanced magnetic anisotropy.

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