Magnetic Susceptibilities

  • Daniel D. Stancil


The previous chapter concentrated on the origins of magnetic moments in individual ions or atoms. In this chapter we will discuss the magnetic properties of macroscopic media composed of very large numbers of individual moments. We are interested in the net magnetization (magnetic dipole moment per unit volume) that exists either spontaneously or in response to an applied magnetic field. If the relationship between the induced magnetization and the applied field is linear, we can write
$$ M = M + \bar{X} \cdot H $$
where \( \bar x \) is called the magnetic susceptibility tensor of the medium. For isotropic media, the susceptibility reduces to a scalar constant times the identity matrix, and M and H are collinear.


Magnetic Susceptibility Yttrium Iron Garnet Anisotropy Field Molecular Field Susceptibility Tensor 
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Physics of Magnetism and Magnetic Susceptibilities

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Copyright information

© Springer-Verlag New York, Inc. 1993

Authors and Affiliations

  • Daniel D. Stancil
    • 1
  1. 1.Department of Electrical and Computer EngineeringCarnegie Mellon UniversityPittsburghUSA

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