Hints for the Control of Magnetic Anisotropy in Molecular Materials

✍ Scribed by D. Gatteschi; L. Sorace

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 488 KB
• Volume: 159
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.2001.9154

✦ Synopsis

We resume here a fundamental aspect concerning magnetic anisotropy and show with some examples how it is possible to rationalize it. The results are obtained within the framework of a simple angular overlap approach. The application of this model to idealized systems, real monomer molecules, and clusters behaving as single-molecule magnets is described, showing how even within a simple ligand 5eld approach it is possible to get some clues on how to control the magnetic anisotropy. Finally, we focus our analysis on the calculation of fourth-order anisotropy, which has been shown to be of fundamental importance in determining the quantum tunneling e4ects in single-molecule magnets.