UNIT 1:
Introduction to Crystals Physics, Single crystalline, polycrystalline and amorphous materials
Single crystals: unit cell, crystal systems.
Bravais Lattices-directions and planes in a crystal
Miller indices, Inter-planar distance
Co-ordination number and packing factor for Simple cubic and BCC structures
Crystal imperfections point& line
Surface and Volume imperfections
UNIT 2:
Conductors: classical free electron theory – electrical conductivity
Success and failures of classical free electron theory
Fermi distribution function
Density of energy states for a metal
Carrier concentration in a metal
Superconductors and properties
Meissner effect – type I & II superconductors
UNIT 3:
Intrinsic Semiconductors, Energy band diagram
Direct and indirect band gap semiconductors
Carrier concentration in intrinsic semiconductors
Variation of Fermi level with temperature
Determination of band gap
Hall effect ,Determination of hall coefficient and application
Photo detectors (PIN & Avalanche).
UNIT 4:
Basic concepts, magnetic moment, susceptibility, permeability
Origin of magnetic moment, Bohr magneton
Dia,Para and Ferro magnetism
Domain theory of ferro magnetism
Soft and hard magnetic materials
Antiferromagnetic materials
Ferrites and its applications
Magnetic storage devices- magnetic hard disc Bubble memory.
UNIT 5:
Spontaneous and stimulated emission- Population inversion
Einstein’s A and B coefficients -derivation.
Semiconductor lasers and applications
Principle and propagation of light in optical fibres
Numerical aperture and Acceptance angle
Types of optical fibres (material, refractive index, mode)
Losses in optical fibre- attenuation, dispersion, bending
Fibre Optical Communication system
