Subject Details
Dept     : AIML
Sem      : 2
Regul    : R2023
Faculty : P.SABEENADEVI
phone  : NIL
E-mail  : sabeena.p.phy@snsct.org
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Lecture Notes

UNIT 1:
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Introduction to Crystals Physics, Single crystalline, polycrystalline and amorphous materials
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Single crystals: unit cell, crystal systems.
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Bravais Lattices-directions and planes in a crystal
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Co-ordination number and packing factor for Simple cubic and BCC structures
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Inter-planar distance
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FCC structures
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HCP structures
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Crystal imperfections point, line, surface and volume imperfections.
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Crystal imperfections point, line, surface and volume imperfections.
UNIT 2:
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Conductors: classical free electron theory – electrical conductivity
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Success and failures of classical free electron theory
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Density of energy states for a metal
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Carrier concentration in a metal
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Superconductors and properties
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Meissner effect – type I & II superconductors
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Fermi distribution function
UNIT 3:
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Intrinsic Semiconductors, Energy band diagram
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Direct and indirect band gap semiconductors
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Carrier concentration in intrinsic semiconductors
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Electrical conductivity
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Extrinsic semiconductors
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Hall effect ,Determination of hall coefficient and application
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Photo detectors (PIN & Avalanche).
UNIT 4:
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Basic concepts, magnetic moment, susceptibility, permeability
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Origin of magnetic moment, Bohr magneton
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Dia,Para and Ferro magnetism
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Domain theory of ferro magnetism
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Hysteresis loop
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Soft and hard magnetic materials
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Antiferromagnetic materials
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Ferrites and its applications
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Magnetic storage devices- magnetic hard disc Bubble memory.
UNIT 5:
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Types of optical fibres (material, refractive index, mode)
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Spontaneous and stimulated emission- Population inversion
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Einstein’s A and B coefficients -derivation.
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CO2 Laser
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Principle and propagation of light in optical fibres
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Losses in optical fibre- attenuation, dispersion, bending
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Fibre Optical Communication system