Search for the optimally suited cantilever type for high-frequency MFM

Michael Rudolf Koblischka, J. D. Wei, M. Kirsch, M. Lessel, R. Pfeifer, M. Brust, U. Hartmann, C. Richter, T. Sulzbach

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Abstract

To optimize the performance of the high-frequency MFM (HF-MFM) technique [1-4], we performed a search for the best suited cantilever type and magnetic material coating. Using a HF-MFM setup with hard disk writer poles as test samples, we carried out HF-MFM imaging at frequencies up to 2 GHz. For HF-MFM, it is an essential ingredient that the tip material can follow the fast switching of the high-frequency fields. In this contribution, we investigated 6 different types of cantilevers, (i) the standard MFM tip (Nanoworld Pointprobe) with 30 nm CoCr coating, (ii) a SSS (Nanoworld SuperSharpSiliconTM) cantilever with a 10 nm CoCr coating, (iii) a (Ni, Zn)-ferrite coated pointprobe tip, (iv) a Ba3Co2Fe23O41 (BCFO) coated pointprobe tip, (v) a low-coercivity NiCo alloy coated tip, and (vi) a permalloy-coated tip.

Original languageEnglish
Article number120
Pages (from-to)596-600
Number of pages5
JournalJournal of Physics: Conference Series
Volume61
Issue number1
DOIs
Publication statusPublished - 2007 Apr 1
Externally publishedYes

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Koblischka, M. R., Wei, J. D., Kirsch, M., Lessel, M., Pfeifer, R., Brust, M., ... Sulzbach, T. (2007). Search for the optimally suited cantilever type for high-frequency MFM. Journal of Physics: Conference Series, 61(1), 596-600. [120]. https://doi.org/10.1088/1742-6596/61/1/120