The exchange coupling as being responsible for ferromagnetism is not the mutual magnetic interaction between two elementary magnetic dipoles. To show this, calculate (a) the magnitude of the magnetic field a distance of 15 nm away, along a dipole axis, from an atom with magnetic dipole moment 1.8 × 10-23 J/T, and (b) the minimum energy required to turn a second identical dipole end for enc in this field. Llaits
The exchange coupling as being responsible for ferromagnetism is not the mutual magnetic interaction between two elementary magnetic dipoles. To show this, calculate (a) the magnitude of the magnetic field a distance of 15 nm away, along a dipole axis, from an atom with magnetic dipole moment 1.8 × 10-23 J/T, and (b) the minimum energy required to turn a second identical dipole end for enc in this field. Llaits
University Physics Volume 3
17th Edition
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:William Moebs, Jeff Sanny
Chapter8: Atomic Structure
Section: Chapter Questions
Problem 49P: Show that U=B . (Hint: An infinitesimal amount of work is done to align the magnetic moment with the...
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