PH25CO4 – APPLIED PHYSICS (EEE) – II
UNIT – I
Semiconductor Materials: Intrinsic and Extrinsic Semiconductors, Carrier,
Concentration – Fermi level, Dependence on carrier-concentration and temperature,
Carrier generation and recombination, Carrier transport: diffusion and drift, Hall Effect,
Applications, Metal-semiconductor junction (Ohmic and Schottky)
Activities: Determination of Hall coefficient
UNIT – II
Dielectrics Materials: Dielectric polarization under static fields – electronic, ionic
and dipolar polarizations – internal fields in solid-Clausius Mossotti equation, Behavior
of dielectrics in alternating fields – Application of dielectrics in transformers – Capacitor
materials, Ferro and piezo materials – Complex dielectric permittivity – dipolar
relaxation – dielectric loss, Applications.
Activities: Measurement of Dielectric Constant of different materials.
UNIT – III
Magnetic Materials: Magnetic material parameters, Ferromagnetic materials, Ferrites
– Soft and Hard magnetic materials, GMR sensors, magnetic disk memories, Principle
of magnetic recording, Materials for magnetic data storage.
Activities: Determination of Hysteresis loop for a ferromagnetic material (B-H curve)
UNIT – IV
Advanced Materials: Thermocouple, bimetals, lead soldering and fuses materials –
their applications.
Activities: Virtual demonstration of working of various types of thermocouples.