Governing conditions of repeatable Barkhausen noise response

O. Stupakov, J. Pal'a, T. Takagi, T. Uchimoto

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

The paper is devoted to the establishment of experimental conditions, which ensure the repeatability of magnetic Barkhausen noise testing in practice. For this task, the measurements were performed on open flat samples using different experimental configurations, including: different magnetization frequencies, sampling rates, and filter cut-off frequencies; using a sample-wrapped coil and using attached pick-up coils of various dimensions, with different lift-offs of a single yoke magnet and of the attached coil. The sample magnetization was controlled by a vertical array of three Hall sensors; their readings were extrapolated to the sample surface to precisely define its field. After analysis of the results, a scheme for an optimized sensor with a controlled field waveform was suggested to improve the measurement repeatability. The important issues of signal processing and parameter applicability were also discussed in detail.

Original languageEnglish
Pages (from-to)2956-2962
Number of pages7
JournalJournal of Magnetism and Magnetic Materials
Volume321
Issue number18
DOIs
Publication statusPublished - 2009 Sep

Keywords

  • Barkhausen noise
  • Magnetic measurement
  • Magnetic non-destructive testing
  • Magnetization control
  • Surface field measurement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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