Detecting slow magnetization relaxation via magnetotransport measurements based on the current-reversal method

Slow magnetization relaxation processes are an important time-dependent property of many magnetic materials. We show that magnetotransport measurements based on a well-established current-reversal method can be utilized to implement a simple and robust screening scheme for such relaxation processes....

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Published inarXiv.org
Main Authors Beckert, Sebastian, Schlitz, Richard, Skobjin, Gregor, Badura, Antonin, Leiviskä, Miina, Kriegner, Dominik, Scheffler, Daniel, Sala, Giacomo, Olejník, Kamil, Michez, Lisa, Baltz, Vincent, Thomas, Andy, Reichlová, Helena, Goennenwein, Sebastian T B
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 23.05.2024
Subjects
Hall effect
Magnetic materials
Magnetic properties
Magnetization
Relaxation time
Time dependence
Time measurement
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Summary:Slow magnetization relaxation processes are an important time-dependent property of many magnetic materials. We show that magnetotransport measurements based on a well-established current-reversal method can be utilized to implement a simple and robust screening scheme for such relaxation processes. We demonstrate our approach considering the anomalous Hall effect in a Pt/Co/AlOx trilayer model system, and then explore relaxation in {\tau} -MnAl films. Compared to magnetotransport experiments based on ac lock-in techniques, we find that the dc current-reversal method is particulary sensitive to relaxation processes with relaxation time scales on the order of seconds, comparable to the current-reversal measurement time scales.
ISSN:2331-8422