The Intermediate Field Between Pure and Applied Magnetism. Importance of Accurate Measurements of Magnetization Curves

  • Minoru Takahashi
Part of the Springer Series in Solid-State Sciences book series (SSSOL, volume 92)

Abstract

Around 1945, most of the researchers who were concerned with magnetism, including magnetic physics and the development of magnetic materials such as iron core or permanent magnets, studied the alloys of the ferromagnetic 3d transition metals Fe, Co, Ni, and elements near them in the periodic table such as Cr, Mn, Cu or the cheaper Si and Al. At that time, they investigated the initial susceptibility µ 0, maximum susceptibility µ m, the behavior of magnetization within a region of rotation and the shape of hysteresis loops (squareness, hysteresis loss). These parameters were obtained from the magnetization curves measured by a ballistic current method or by an abstraction method. They also studied dc behavior such as the magnetoresistance or magnetostriction which accompanies magnetization. Physicists studied the mechanism of the magnetization process or the origin of magnetism and metallurgists developed practical magnetic materials using metallurgical methods. On the other hand, electronic engineers worked so independently of physicists or metallurgists that they even used different terms such as “permeability” and “coercivity” instead of “susceptibility” and “coercive force”, and they were interested in magnetic properties in alternating fields. Although there were very clear boundaries between the two groups, an “intermediate field” did not seem to exist.

Keywords

Permeability Crystallization Microwave Anisotropy Torque 

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References

  1. 7.1.
    S. Kaya: Z. Phys. 84, 705 (1933)ADSCrossRefGoogle Scholar
  2. 7.2.
    S. Kadowaki, M. Takahashi: J. Phys. Soc. Jpn. 38, 1612 (1975)ADSCrossRefGoogle Scholar
  3. 7.3.
    I.M. Puzei, V.I. Goman’kov: Fiz. Metal. Metalloved 23, 636 (1967)Google Scholar
  4. 7.4.
    I.M. Puzei: Fiz. Metal. Metalloved 11, 686 (1961)Google Scholar
  5. 7.5.
    R.C. Hall: J. Appl. Phys. 31, 1575 (1960)CrossRefGoogle Scholar
  6. 7.6.
    S. Chikazumi, T. Wakiyama, K. Yoshida: Proc. Int. Conf. on Magnetism, Nottingham, 1964 ( Institute of physics and the Physical Society, London, 1965 ) p. 756Google Scholar
  7. 7.7.
    M. Takahashi, T. Miyazaki, K. Takakura, N. Ikeda: Abstract of the Japan Phys. Society (1976, April) p. 49Google Scholar
  8. 7.8.
    Edited by Non-traditional Technology: Magnetic Materials in Recent Years (Kougyouchousakai, 1981) p. 35Google Scholar
  9. 7.9.
    S. Chikazumi: Handbook of Magnetism (Asakura, 1975)Google Scholar
  10. 7.10.
    K.H.J. Buschow, A.S. van der Goot: J. Less-common Met. 14, 323 (1968)CrossRefGoogle Scholar
  11. 7.11.
    R.S. Perkins, S. Stassler: Phys. Rev. B15, 477 (1977)ADSCrossRefGoogle Scholar
  12. 7.12.
    H. Fujii, T. Hokabe, T. Kamigaichi, T. Okamoto: J. Phys. Soc. Japan 43, 41 (1977)ADSCrossRefGoogle Scholar
  13. 7.13.
    M. Takahashi, T. Miyazaki. Jpn. J. Appl. Phys. 20, 1821 (1981)CrossRefGoogle Scholar
  14. 7.14.
    A. Iga, Y. Tawara, A. Yanase: J. Phys. Soc. Japan 21, 404 (1966)ADSCrossRefGoogle Scholar
  15. 7.15.
    M. Takahashi, M. Koshimura, T. Abuzuka: Jpn. J. Appl. Phys. 20, 1821 (1981)ADSCrossRefGoogle Scholar
  16. 7.16.
    J.L. Walter, S.F. Batram, R.R. Russell: Meta. Trans. A 9A, 803 (1978)CrossRefGoogle Scholar
  17. 7.17.
    U. Herold, U. Koster: Z. Metallkunde Bd 69, H. 5 327 (1978)Google Scholar
  18. 7.18.
    L.J.E. Hofer, E.M. Cohn, W.C. Pecbles: J. Am. Chem. Soc. 71, 189 (1949)CrossRefGoogle Scholar
  19. 7.19.
    P. Blum, R. Pauthenet: Acad. Sci. 30, 1501 (1953)Google Scholar
  20. 7.20.
    M. Sagawa, T. Fujimura, M. Togawa, H. Yamamoto, Y. Matsuura: Abstract of the Conference of the Japan Institute of Metals (Oct. 1983) p. 551Google Scholar
  21. 7.21.
    M. Takahashi: Abstract of 14th research meeting for new materials (Oct. 1980)Google Scholar
  22. 7.22.
    S. Chikazumi: Physics of Ferromagnetism ( Shókabó, Tokyo, 1959 )Google Scholar

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© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • Minoru Takahashi

There are no affiliations available

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