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ePaper created 2014-04-30, 16:22:09 | version 1.30.01
research// The HZDR Research Magazine WWW.Hzdr.DE 30 31 STABILITY THROUGH A VORTEX: Within the space between two magnetic layers, static three-dimensional magnetic vortices form around a non-magnetic intermediate layer. They act to stabilize the direction of magnetization in the vortex’ central core – a prerequisite for the kind of stable vortex antennae applicable in wireless data transfer. Diagram: Sander Münster Like many other young scientists, HZDR physicist Sebastian Wintz, too, is currently working on his dissertation. And even if the goal of all doctoral candidates is to enrich science with new knowledge and insight, they do not always discover a hither-to unknown phenomenon necessarily. Wintz can make that claim for himself – together with colleagues from HZDR and the Paul Scherrer Institute (PSI) in Switzerland. Sebastian Wintz is involved with extremely small structures of magnetic films only a few nanometers thick, with a diameter of a few thousandths of a millimeter. It is at these tiny dimensions, and particularly at the even smaller level of atoms, that the magnetic properties exhibited by a material originate. For in magnetic materials, electrons of the atoms behave like small magnets that interact with one another. If you influence magnetic thin-film structures the way that Wintz has, unusual things can appear. _Text . Anja Weigl Magnetic Vortices in 3D // 3D magnetic vortices can be important for high-performance radio antennas and data storage media.