Introduction to the Theory of Magnetism

Introduction to the Theory of Magnetism is an introductory text on the theory of magnetism. The discussions are organized around diamagnetism, paramagnetism, and ferromagnetism. The exchange interaction and the resulting many-particle problem for a system of atomic spins are also considered, and the properties of this system are examined in several approximations.
This book is comprised of three chapters and begins with a review of the fundamental effects of diamagnetism, paying particular attention to the Bohr-van Leeuwen theorem, the Fermi gas, Landau levels, and cyclotron resonance. The diamagnetism of atoms and ions and of electrons is also described, and the magnetic moment of a free electron gas produced by the intrinsic magnetic moment of the electrons is calculated. The next chapter is devoted to the classical theory of paramagnetism and covers the paramagnetism of free electrons, free atoms (rare earths), and atoms in a crystal. Paramagnetic resonance and the Zeeman effect of free atoms are highlighted. The third and last chapter focuses on ferromagnetism and ferromagnetic resonance, together with the molecular-field approximation, spin waves, high temperatures, and the band model.
This monograph will be a valuable resource for students of physics.

Inhalt

Preface to the German Edition
Foreword to the English Edition
Abbreviations and Symbols
Classification of Magnetic Substances
I. Diamagnetism

1. The Bohr-van Leeuwen Theorem
2. Diamagnetism of Atoms and Ions
3. The Fermi Gas
4. The Landau Levels
5. Diamagnetism of Electrons
6. Cyclotron Resonance
   II. Paramagnetism
7. Paramagnetism of Free Electrons
8. Classical Theory of Paramagnetism
9. The Zeeman Effect of Free Atoms
10. Paramagnetism of Free Atoms (Rare Earths)
11. Paramagnetism of Atoms in a Crystal
12. Paramagnetic Resonance
    III. Ferromagnetism
13. Interactions
14. The Molecular-Field Approximation
15. Spin Waves
16. High Temperatures
17. The Band Model
18. Ferromagnetic Resonance
    References
    Index