#S36 Ferromagnetism
Richard Feynman
Jonathan
May 14, 20264 March 1963Caltech, Pasadena CA
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Summary
A lecture explains ferromagnetism by deriving how magnetization produces effective currents and modifies Maxwell’s equations. It then develops the mean-field theory of iron, including hysteresis, permeability, Curie temperature, and the quantum origin of spin alignment.
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