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 us to perform quantitative frequency-swept bbFMR measurements without the need for a calibration of the microwave setup. We furthermore compare the results of the proposed frequency space analysis and a conventional analysis in field-space of bbFMR data obtained from a permalloy thin film. The very good agreement of the extracted parameters using the two methods shows the reliability of our method.
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; Note: Derivative divide, a method for the analysis of broadband ferromagnetic resonance in the frequency domain. Rev. Sci. Instrum. 1 July 2018; 89 (7): 076101. https://doi.org/10.1063/1.5045135
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