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B.S. DIELECTRICS [PHYS-688] SYLLABUS
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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.
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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.
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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.
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Measuring Techniques: Introduction, Frequency Domain
Technique, Time Domain Technique, DC Measurements, D.C Potential Probing,
Resonance method, Phase Method, Schering Bridge, Optical Methods.
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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,
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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).
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