Introduction to Magnetism -- Metallic Magnetism at the Ground State -- Magnetic Excitations -- Metallic Magnetism at Finite Temperatures -- Spin Fluctuation Theory in Weak Ferromagnets -- Antiferromagnetism and Spin Density Waves -- Magnetism in Dilute Alloys -- Magnetism of Disordered Alloys -- Magnetism of Amorphous Metals and Alloys.

This book describes theoretical aspects of the metallic magnetism from metals to disordered alloys to amorphous alloys both at the ground state and at finite temperatures. The book gives an introduction to the metallic magnetism, and treats effects of electron correlations on magnetism, spin fluctuations in metallic magnetism, formation of complex magnetic structures, a variety of magnetism due to configurational disorder in alloys as well as a new magnetism caused by the structural disorder in amorphous alloys, especially the itinerant-electron spin glasses. The readers will find that all these topics can be understood systematically  by means of the spin-fluctuation theories based on the functional integral method.