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arXiv · 1705.05694

Note: Derivative divide, a method for the analysis of broadband ferromagnetic resonance in the frequency domain

Hannes Maier-Flaig·Sebastian T. B. Goennenwein·Ryo Ohshima·Masashi Shiraishi·Rudolf Gross·Hans Huebl·Mathias Weiler
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Abstract

Broadband ferromagnetic resonance (bbFMR) spectroscopy is an established experimental tool to quantify magnetic properties. Due to frequency-dependent transmission of the microwave setup, bbFMR measurements in the frequency domain require a suitable background removal method. Here, we present a measurement and data analysis protocol that allows to perform quantitative frequency-swept bbFMR measurements without the need for a calibration of the microwave setup. The method, its limitations and advantages are described in detail. Finally the method is applied to evaluate FMR spectra of a permalloy thin film. The extracted material parameters are in very good agreement with those obtained using a conventional analysis in field-space.

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Hannes Maier-Flaig, Sebastian T. B. Goennenwein, Ryo Ohshima, Masashi Shiraishi, Rudolf Gross, Hans Huebl, Mathias Weiler. 2018-02-22. Note: Derivative divide, a method for the analysis of broadband ferromagnetic resonance in the frequency domain. https://doi.org/10.1063/1.5045135

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