Bulk Ferromagnetic Amorphous Alloys

  1. Prof. J. V. Wood2,
  2. Prof. Dr. L. Schultz3 and
  3. Prof. Dr. D. M. Herlach4
  1. Horia Chiriac and
  2. Nicoleta Lupu

Published Online: 25 APR 2006

DOI: 10.1002/3527607277.ch12

Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, Volume 8

Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, Volume 8

How to Cite

Chiriac, H. and Lupu, N. (2000) Bulk Ferromagnetic Amorphous Alloys, in Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, Volume 8 (eds J. V. Wood, L. Schultz and D. M. Herlach), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527607277.ch12

Editor Information

  1. 2

    University of Nottingham, Division of Materials, Nottingham NG7 2RD, United Kingdom

  2. 3

    Institut für Festkorper- und Werkstofforschung Dresden e.V., Postfach 270016, 01171 Dresden, Germany

  3. 4

    Deutsches Zentrum für Luft- und Raumfahrt e.V., Linder Hohe, 51170 Köln, Germany

Author Information

  1. National Institute of Research and Development for Technical Physics, Iasi, Romania

Publication History

  1. Published Online: 25 APR 2006
  2. Published Print: 27 JUN 2000

Book Series:

  1. EUROMAT 99

ISBN Information

Print ISBN: 9783527301935

Online ISBN: 9783527607273

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Keywords:

  • bulk ferromagnetic amorphous alloys

Summary

The relationship structure – magnetic properties of the ribbons with thicknesses up to 200 mm prepared by melt-spinning method and bars having between 0.5 and 3 mm in diameter prepared by suction casting method, of nominal compositions Fe56Co7Ni7Zr6Nb2.5M1.5B20 (M = Zr, Ti, Ta, Mo) and Nd50Fe40Si10-xAlx (x = 0-10 at.%) was investigated. Magnetization up to 1.1 T, coercive fields of about 5 A/m, magnetic permeability of 25 000–30 000, electrical resistivities up to 2.08 μΩ·m and saturation magnetostriction constants smaller than 10·10-6 in the as-cast state were found for the Fe-based amorphous alloys. The large values of the intrinsic coercive force, measured at room temperature for the Nd-based amorphous samples, ranging from 240 kA/m to 350 kA/m, as well as the observed anisotropy both in magnetization and coercive force can be explain by the existence of the random distributed ferromagnetic clusters coupled between them by ferromagnetic exchange interactions through the amorphous matrix.