Dependence of Magnetic Properties on Composition of Nanocrystalline Fe-M-B-Cu (M: Zr, Nb, Mo, Ti, Ta) Alloys

  • M. Kopcewicz
  • A. Grabias
  • B. Idzikowski
  • D. L. Williamson
Conference paper

Abstract

The specialized rf-Mössbauer technique is used to elucidate the magnetic properties of NANOPERM-type nanocrystalline alloys. The influence of alloy composition on the soft magnetic properties is studied for the Fe80M7B12Cu1 (M: Ti, Ta, Nb, Mo, Zr) alloys. The rf-Mössbauer experiments allowed us to distinguish magnetically soft nanoclusters from magnetically harder microcrystalline phases. The measurements performed as a function of the rf field intensity allowed the determination of the distribution of anisotropy fields related to the size distribution of bcc nanoclusters. Smaller anisotropy fields in the nanocrystalline phase were found in Nb-, Zr-, and Mo-containing alloys as compared with the alloys which contain Ti and Ta. The Mössbauer measurements were supplemented by X-ray diffraction determination of the size of nanocrystalline grains.

Keywords

Permeability Crystallization Anisotropy Ferrite Expense 

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Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • M. Kopcewicz
    • 1
  • A. Grabias
    • 1
  • B. Idzikowski
    • 2
  • D. L. Williamson
    • 3
  1. 1.Institute of Electronic Materials TechnologyWarsawPoland
  2. 2.Institute of Molecular PhysicsPolish Academy of SciencesPoznanPoland
  3. 3.Physics DepartmentColorado School of MinesGoldenUSA

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