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Coercivity Enhancement and the Analysis of Asymmetric Loops in a Perpendicularly Magnetized Thin Film

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Abstract

The enhancement of coercive field values depending on the measurement angle in a perpendicularly magnetized continuous thin film and the asymmetries in its hysteresis loops are analyzed and discussed by means of Hall effect measurements. Anomalous Hall effect and planar Hall effect contributions to the Hall results are separated to make the asymmetric loops symmetrical. The magnetic properties of the sample are also measured by using a vibrating sample magnetometer and magneto-optic Kerr effect methods. The data obtained by the measurement systems are compared, and the differences in their results are discussed. The results of the work highlight the importance of choosing the correct setup for the measurements and the importance of the measurement angle for the Hall effect studies in magnetic thin films.

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Acknowledgments

The author thanks Bayram Kocaman for the technical support during the film depositions. The author would also like to acknowledge Bulat Rami for the fruitful discussions.

Funding

This work was supported by the research fund of the Gebze Technical University through the project no. BAP 2018-A105-43.

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  1. Department of Physics, Gebze Technical University, 41400, Gebze, Kocaeli, Turkey

    Mustafa Öztürk

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Correspondence to Mustafa Öztürk.

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Öztürk, M. Coercivity Enhancement and the Analysis of Asymmetric Loops in a Perpendicularly Magnetized Thin Film. J Supercond Nov Magn 33, 3097–3105 (2020). https://doi.org/10.1007/s10948-020-05564-5

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