Resonance

, Volume 9, Issue 8, pp 57–66

Heisenberg and ferromagnetism

General Article

Abstract

Heisenberg’s contributions to the understanding of ferromagnetism are reviewed. The special features of ferromagnetism, vis-a-vis dia and para magnetism, are introduced and the necessity of a Weiss molecular field is explained. It is shown how Heisenberg identified the quantum mechanical exchange interaction, which first appeared in the context of chemical bonding, to be the essential agency, contributing to the co-operative ordering process in ferromagnetism.

Keywords

Ferromagnetism magnetization internal field exchange 

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Suggested Reading

  1. [1]
    R P Feynman, R B Leighton and M Sands,The Feynman Lectures on Physics, Narosa Publishing House, New Delhi Vol II, III, 1995.Google Scholar
  2. [2]
    C Kittel,Introduction to Solid State Physics, John Wiley & Sons Inc., Singapore, 2001.Google Scholar

Copyright information

© Indian Academy of Sciences 2004

Authors and Affiliations

  1. 1.Indian Institute of AstrophysicsBangalore

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