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May 1, 1993IEEE Translation Journal on Magnetics in Japan

Frequency Dependence of Permeability in Fe-Zr-N Film

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Authors

KNK. NakanishiFujifilm (Japan)OSOsamu ShimizuThe University of TokyoSYShoji YōshidaKagoshima University

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Implication

Experimental study demonstrates eddy current dominance in thick Fe-Zr-N films, highlighting key design criteria for high-frequency magnetic heads.

Key Points

  • Identify the primary source of high-frequency magnetic loss in thick Fe-Zr-N films to evaluate their suitability for magnetic head applications.
  • Fabricated and evaluated Fe-Zr-N films across thicknesses varying up to 8 μm.
  • Measured frequency-dependent permeability while analyzing the effects of uniaxial anisotropy field, electrical resistivity, and elemental additions.
  • Compared experimental permeability across driving frequencies below 30 MHz against classical eddy current loss equations.
  • Eddy currents represent the predominant mechanism of high-frequency loss in films exhibiting high uniaxial anisotropy.
  • Permeability in high-anisotropy films matches classical eddy current loss equations when using an effective uniaxial anisotropy field at driving frequencies under 30 MHz.
  • Permeability in low-anisotropy films deviates from classical eddy current loss equations, requiring consideration of anisotropy dispersion to explain the observed behavior.

Cite This Study

Nakanishi et al. (1993) studied this question.

synapsesocial.com/papers/6a93de0278fe3e71bd43d9c5https://doi.org/10.1109/tjmj.1993.4565635
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Magnetic properties of Fe-X-N (X=Zr,Hf,Nb,Ta) films.1991 · 35 citations
  2. 2Effects of addition of Zr and Ti on sputtered Fe-N films.1990 · 34 citations
  3. 3Soft magnetism of crystalline Fe based alloy sputtered films1990 · 99 citations
  4. 4Magnetic anisotropy and permeability of Fe-Zr-N thin films.1991 · 9 citations
  5. 5Anisotropy dispersion of amorphous Co-Ti thin films.1985 · 11 citations