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DS: Fachverband Dünne Schichten

DS 4: Magnetic / Organic Interfaces, Spins in Organics and Molecular Magnetism (jointly with MA)

DS 4.2: Vortrag

Montag, 31. März 2014, 15:30–15:45, CHE 91

Interface and thin film properties of metal-free organic magnets — •Reza Kakavandi, Sabine-Antonia Savu, Thomas Chassé, and Maria Benedetta Casu — Institute of Physical and Theoretical Chemistry, Tübingen, Germany

Metal-free organic-based magnets are relatively new materials with open-shell structure that offer tremendous opportunity in information storage and processing technology, based on the presence of spatially delocalized unpaired electrons. Essential tools such as X-ray Photoelectron Spectroscopy (XPS) and Near Edge X-ray Absorption Fine structure (NEXAFS) Spectroscopy are utilized to study the electronic structure and the paramagnetic character of nitronyl nitroxide radicals deposited on well-defined metal-oxide surfaces. The molecule-substrate interface and the thin film properties are investigated, focusing on their impact on the magnetic character of the systems. In particular, the transitions related to the singly occupied molecular orbitals, expected for this class of materials, are investigated using NEXAFS spectroscopy.