Preparation of ferrite-coated MFM cantilevers

M. R. Koblischka, M. Kirsch, J. Wei, T. Sulzbach, U. Hartmann

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Ferrite-coated magnetic force microscopy (MFM) cantilevers were prepared for the use with a high-frequency MFM (HF-MFM) setup. The ferrite coatings were fabricated by means of radio frequency (RF) magnetron sputtering directly on the Si surface. Two types of ferrites were employed in this study: NiZnFe2O4 spinel and Co2 Z-type hexaferrite (Ba3Co2Fe24O41, BCFO). The typical thickness of the coatings was 50 nm. For comparison, ferrite samples on (1 0 0) and (1 1 1)-oriented Si substrates (analogous to the surfaces of the cantilevers) were prepared. Successful HF-MFM imaging was performed with both types of cantilevers using harddisk writer poles as samples. The HF-MFM images obtained by ferrite-coated cantilevers evidently reveal more details of the magnetic field distribution of the writer poles up to the GHz range than conventional CoCr-coated MFM cantilevers.

Original languageEnglish
Pages (from-to)e666-e669
JournalJournal of Magnetism and Magnetic Materials
Volume316
Issue number2 SPEC. ISS.
DOIs
Publication statusPublished - 2007 Sep

Keywords

  • Ferrite
  • HF-MFM
  • High-frequency behavior
  • MFM cantilever

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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