RTU 3rd sem Electronics And Communication Engineering B.Tech. Syllabus Electromagnetic Properties of Materials

3EC5A Electromagnetic Properties of Materials

Unit I

DIELECTRICS MATERIALS - Introduction, Polarization, Polarizability,
Different types of polarization, Electronic, ionic, Orientation and space polarization,
frequency and temperature dependence of different polarization, Dielectric loss and
loss tangent, energy store and loss in dynamic polarization, Phenomenon of
spontaneous polarization and ferro-electricity, Ferroelectric hysteresis loop,
Piezoelectricity, piezoelectric materials: Quartz, Rochelle salt and PZT ,
Applications of dielectrics

Unit II

MAGNETIC MATERIALS - Introduction, magnetization, theory of Dia, Para,
Ferro- Ferrimagnetism and antiferromagnetism, Weiss field and magnetic domains,
BH hysteresis loop, soft and hard magnetic materials and their applications,
magnetic energy. Magnetostriction, giant magnetostriction resistor (GMR) and
engineering applications of it. Magnetic spin, new electronic devices based on
magnetic spin

Unit III

SEMI CONDUCTOR MATERIALS - Introduction, Energy band gap structures of
semiconductors, Classifications of semiconductors, Degenerate and nondegenerate
semiconductors, Direct and indirect band gap semiconductors, Electronic properties
of Silicon, Germanium, Compound Semiconductor, Gallium Arsenide, Gallium
phosphide & Silicon carbide, Variation of semiconductor conductivity, resistance
and bandgap with temperature and doping. Thermistors, Sensitors

Unit IV

CONDUCTIVE & SUPERCONDUCTIVE MATERIALS - Electrical properties
of conductive and resistive materials. , Energy bandgap structures of metals,
resistivity of conductors and multiphase solids, Matthiessen’s rule, Important
characteristics and electronic applications of specific conductor & resistance
materials, Superconductor phenomenon, Type I and Type II superconductors.
Theory of superconductors, High temperature superconductors and their
applications.

Unit V

NANOMATERIALS - Introduction, Change in band structure at nano-stage.
Structure of Quantom dots (nano-dots) & Quantom wires, Fabrication &
Characterization of nanomaterials, Structure of single wall and multi-wall carbon
nanotube (CNT), Change in electrical, Electronic and optical properties at nano
stage, Potential applications of nano materials.