Classification of magnetic materials; Quantum theory of paramagnetism; Pauli paramagnetism; Properties of magnetically ordered solids; Weiss theory of ferromagnetism; Law of approach of saturation; Interpretation of exchange interaction in solids; Ferromagnetic domains; Techniques of magnetization; Intrinsic magnetization of alloys; Theory of antiferromagnetic and ferrimagnetic ordering; Ferrimagnetic oxides and compounds.