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K: Fachverband Kurzzeitphysik

K 6: Poster

K 6.1: Poster

Donnerstag, 11. März 2010, 16:30–19:00, Lichthof

Properties of magnetic materials at very-high magnetization rates — Byung-Joon Lee¹, •Christian Teske¹, Isfried Petzenhauser², Marcus Iberler¹, Joachim Jacoby¹, and Udo Blell² — ¹Institut für Agewandte Physik, Goethe Universität, Frankfurt — ²GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt

The use of magnetic materials is increasing in pulsed power systems. To optimize those applications, it is necessary to know the behavior of magnetic materials when their magnetizations reversal time is in the order of 100 ns or less. In the manufacturers datasheets, the magnetization behavior of magnetic materials is usually given for low frequencies (kHz range or below). To find useful data for high speed magnetic field applications, several types of magnetic materials (amorphous alloys, MnZn and NiZn) were experimentally investigated and compared. In this presentation, the material characterizations, such as B-H curve and losses, are described under magnetic reversal velocity of about 30 Tesla per microsecond. Finally, as an important application, those materials were tested as a saturating inductor to improve the capabilities of gas switches.