3 Unit(s)

Dielectric properties of solids, polarization, plasma oscillation in solids, polariton and its dispersion relation. Magnets: paramagnetism, Ferromagnetism and anti ferromagnetism, Ferrimagnetism, Langevin theory of paramagnetism and diamagnetism, molecular field theory, classical and Quantum theories of magnetism. Applications of magnetic materials concepts of defects in solids, imperfections in solids, trenknel defects, schottky defects and Eingteinn’s diffusion equation. Magnetic properties of materials, magnetic susceptibility, paramagnetism, diamagnetism, ferromagnetic and antiferromagnetism, ferrimagnetism, domain theory, Langevin theory of diamagnetism and paramagnetism. Quantum theory of magnetism, magnetic resonance, imperfection in solids, Frankel and Schottky defects, Fick’s law, Einstein’s law and diffusion of imperfections in solid.