B.S. DIELECTRICS [PHYS-688] SYLLABUS

Review of Basic Concepts: Introduction, Conductors, semiconductors and insulators (dielectrics),Energy storage in a capacitor, Energy storage in vacuum and in the presence of a dielectric material.

Dielectrics in Electrostatics: Introduction, The Electric Dipole Moment and the Electric Polarization Mechanisms, Perfect and a Real Dielectric, Bound Charge Densities, Polarization Current Density, The Local Field, Electric Susceptibility, Electric displacement D, Electric Permittivity, Molecular Polarizability and Clausius-Mossotti Equation, Langevin Equation, Dielectrics in Time Varying Electric Fields, Response of a Dielectric in Time Domain:(DRS, 36-42), Energy Loss in the Time Domain(DRS 34-38), Response of a Dielectric in Frequency Domain, Permittivity conductivity and loss, Kramers-Kronig Relations, Dispersion.

Theories for Interpretation of Data: Introduction, Debye Model, DRT, Power Law, Universal Response, Low Frequency Dispersion (LFD), Maxwell-Wagner Response, Diffusive Model, Many body Phenomena, Local Field Theory.

Measuring Techniques: Introduction, Frequency Domain Technique, Time Domain Technique, DC Measurements, D.C Potential Probing, Resonance method, Phase Method, Schering Bridge, Optical Methods.

Analysis of Dielectric Measurements: Introduction, Impedance Spectroscopy, Admittance Spectroscopy, Cole-Cole Plot, Cole Davidson Plot, Normalization of Dielectric Data, Arrhenius Plot, Experimental Results on Different Materials,

Recommended Text:
1. P. J. Harrop, "Dielectrics" Butterworth, London, (1972).
2. A. Chelkowski, "Dielectric Physics", Elsevier Science Publishing Company, London
(1980).
3. A. K. Jonscher, "Dielectric Relaxation in Solids", Chelsea Dielectric Press, London, (1983).
4. B.K.P. Scaife, "Principles of Dielectrics" Oxford Science Publications, Oxford (1989).
5. A. K. Jonscher, “Universal Relaxation Law ", Chelsea Dielectric Press, London, (1996).