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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Bibliographic Details
Published in:arXiv.org 2024-05
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: Article
Language:English
Subjects:
Hall effect
Magnetic materials
Magnetic properties
Magnetization
Relaxation time
Time dependence
Time measurement
Online Access:Get full text
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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