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

Research output: Contribution to journalReview articlepeer-review

15 Scopus citations

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 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.

Original languageEnglish
Article number076101
JournalReview of Scientific Instruments
Volume89
Issue number7
DOIs
StatePublished - 1 Jul 2018

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