PH3251 Syllabus MATERIALS SCIENCE
PH3251 Syllabus MATERIALS SCIENCE Regulation 2021 Anna University free download. MATERIALS SCIENCE Syllabus PH3251 pdf download free.
UNIT I CRYSTALLOGRAPHY PH3251 Syllabus
Crystal structures: BCC, FCC and HCP – directions and planes – linear and planar densities – crystal
imperfections- edge and screw dislocations – grain and twin boundaries – Burgers vector and elastic
strain energy- Slip systems, plastic deformation of materials – Polymorphism – phase changes –
nucleation and growth – homogeneous and heterogeneous nucleation.
UNIT II ELECTRICAL AND MAGNETIC PROPERTIES OF MATERIALS
Classical free electron theory – Expression for electrical conductivity – Thermal conductivity,
expression – Quantum free electron theory :Tunneling – degenerate states – Fermi- Dirac statistics
– Density of energy states – Electron in periodic potential – Energy bands in solids – tight binding
approximation – Electron effective mass – concept of hole. Magnetic materials: Dia, para and
ferromagnetic effects – paramagnetism in the conduction electrons in metals – exchange interaction
and ferromagnetism – quantum interference devices – GMR devices.
UNIT III SEMICONDUCTORS AND TRANSPORT PHYSICS PH3251 Syllabus
Intrinsic Semiconductors – Energy band diagram – direct and indirect band gap semiconductors –
Carrier concentration in intrinsic semiconductors – extrinsic semiconductors – Carrier concentration
in N-type & P-type semiconductors – Variation of carrier concentration with temperature – Carrier
transport in Semiconductors: Drift, mobility and diffusion – Hall effect and devices – Ohmic contacts
– Schottky diode.
UNIT IV OPTICAL PROPERTIES OF MATERIALS PH3251 Syllabus
Classification of optical materials – Optical processes in semiconductors: optical absorption and
emission, charge injection and recombination, optical absorption, loss and gain. Optical processes
in quantum wells – Optoelectronic devices: light detectors and solar cells – light emitting diode –
laser diode – optical processes in organic semiconductor devices –excitonic state – Electro-optics
and nonlinear optics: Modulators and switching devices – plasmonics.
UNIT V NANOELECTRONIC DEVICES PH3251 Syllabus
Quantum confinement – Quantum structures – quantum wells, wires and dots – Zener-Bloch oscillations – Resonant tunneling – quantum interference effects – mesoscopic structures – Single
electron phenomena – Single electron Transistor. Semiconductor photonic structures – 1D, 2D and
3D photonic crystal. Active and passive optoelectronic devices – photo processes – spintronics –
carbon nanotubes: Properties and applications.
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PH3251 Notes MATERIALS SCIENCE