Dresden 2006 – wissenschaftliches Programm
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MA: Magnetismus
MA 5: Spin-Structures and Magnetic Phase Transitions I
MA 5.4: Vortrag
Montag, 27. März 2006, 11:00–11:15, HSZ 403
Elastomagnetic coupling of the ferrimagnetic semiconductor FeCr2S4 studied with surface acoustic waves — •Claus Müller1, Veaceslav Zestrea2, Vladimir Tsurkan1,2, Siegfried Horn1, Reinhard Tidecks1, and Achim Wixforth1 — 1Institut für Physik, Universität Augsburg, D-86159, Augsburg, Germany — 2Institute of Applied Physics, Academy of Sciences of Moldova, MD-2028, Chisinau, R. Moldova
A thin single crystalline plate of the ferrimagnetic semiconductor FeCr2S4 was attached to the sound path of a surface acoustic wave (SAW) delay line. We investigated the attenuation and frequency tracking of the probing SAW in the temperature range from 4.2K to 200K. The same anomalies as in low-field magnetization measurements were seen. Since there is no coincidence of these anomalies with changes of the sheet conductance, they are related to structural transformations.