PH3205 - APPLIED PHYSICS (Syllabus) 2021-regulation Anna University

PH3205 - APPLIED PHYSICS (Syllabus) 2021-regulation Anna University

PH3205

APPLIED PHYSICS

 LPTC

3003

COURSE OBJECTIVES:
• To equip the students to have a knowledge on different types of electron theory, basics of quantum mechanics and about energy bands
• To introduce the physics of semiconducting materials and applications of semiconductors in device fabrication
• To make the students to learn the mechanisms of polarization in dielectric materials, and about classification and properties of dielectric materials
• To make the students to learn the origin of magnetism in magnetic materials and their classification; to learn the physics of superconductivity and various properties exhibited by superconductors
• To make the students familiarize with the optical properties of materials.

UNIT I

ELECTRICAL PROPERTIES OF MATERIALS

9

Classical free electron theory - Expressions for electrical conductivity and Thermal conductivity - Wiedemann-Franz law – Success and failures - 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.

UNIT II

SEMICONDUCTOR AND TRANSPORT PHYSICS

9

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 III

DIELECTRICS AND FERROELECTRICS

9

Macroscopic description of the static dielectric constant.The electronic and ionic polarizabilities of molecules - orientational polarization - Measurement of the dielectric constant of a solid.The internal field - Lorentz, Clausius-Mosotti relation. Behaviour of dielectrics in an alternating field, elementary ideas on dipole relaxation, - Piezo, pyro and ferroelectric properties of crystals -classification of ferroelectric crystals - BaTiO3 and KDP.

UNIT IV

MAGNETISM AND SUPERCONDUCTIVITY

9

Atomic magnetic moment – classification of magnetic materials: diamagnetism, paramagnetism, ferromagnetism, antiferromagnetism and ferrimagnetism - Ferromagnetism: saturation magnetization and Curie temperature – exchange interaction - Domain theory – M versus H behavior – soft and hard magnetic materials -. Superconductivity – Zero resistance and the Meissner effect – Type I and Type II superconductors – critical current density - BCS theory of superconductivity - Elements of high temperature superconductivity (basic concepts only).

UNIT V

OPTICAL PROPERTIES OF MATERIALS

9

Light waves in a homogeneous medium - refractive index - dispersion: refractive index-wave-length behaviour - group velocity and group index – NLO materials – phase matching - SHG, sum frequency generation, parametric oscillations – difference frequency generation (qualitative)- applications- - complex refractive index and light absorption - Luminescence, phosphors and white LEDs - polarization - optical anisotropy: uniaxial crystals, birefringence, dichroism - electro-optic effect and amplitude modulators.

TOTAL : 45 PERIODS

COURSE OUTCOMES: Upon completion of this course, the students should be able to
• familiarize with theories of electrical and thermal conduction is solids, basic quantum mechanics, and energy bands
• gain knowledge on semiconducting materials based on energy level diagrams, its types, temperature effect.
• understand the mechanisms of various types of polarization and about classification and properties of ferroelectric crystals
• learn the classification of magnetic materials, theory and applications of ferromagnetic materials and superconductors
• acquire knowledge on light waves, non-linear optical properties of materials and their

TEXT BOOKS:
1. S.O. Kasap. Principles of Electronic Materials and Devices, McGraw Hill Education (Indian Edition), 2020.
2. Charles Kittel, Introduction to Solid State Physics, Wiley India Edition, 2019.
3. R.Balasubramaniam, Callister’s Materials Science and Engineering. Wiley (Indian Edition), 2014.

REFERENCES:
1. L.Solymar, D.Walsh and R.R.A.Syms, Electrical Properties of Materials, Oxford Univ.Press, 2014.
2. Jasprit Singh, Semiconductor Optoelectronics: Physics and Technology,McGraw-Hill Education (Indian Edition), 2019.
3. Kip S. Thorne and R.D.Blandford, Modern Classical Physics, Princeton Univ.Press, 2017.
4. Amnon Yariv and P.Yeh, Photonics: Optical Electronics in Modern Communications, Oxford Univ.Press, 2007.
5. David Jiles, Introduction to Magnetism and Magnetic Materials, Springer, 1991.

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