PH6251 ENGINEERING PHYSICS – II

PH6251 ENGINEERING PHYSICS – II

PH6251	ENGINEERING PHYSICS – II	L T  P C
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OBJECTIVES:

·         To enrich the understanding of various types of materials and their applications in engineering and technology.

UNIT I            CONDUCTING MATERIALS                                                                                          9

Conductors – classical free electron theory of metals – Electrical and thermal conductivity – Wiedemann – Franz law – Lorentz number – Draw backs of classical theory – Quantum theory – Fermi distribution function – Effect of temperature on Fermi Function – Density of energy states – carrier concentration in metals.

UNIT II          SEMICONDUCTING MATERIALS                                                                                 9

Intrinsic semiconductor – carrier concentration derivation – Fermi level – Variation of Fermi level with temperature – electrical conductivity – band gap determination – compound semiconductors -direct and indirect band gap- derivation of carrier concentration in n-type and p-type semiconductor – variation of Fermi level with temperature and impurity concentration –– Hall effect –Determination of Hall coefficient – Applications.

UNIT III	MAGNETIC AND SUPERCONDUCTING MATERIALS	9
Origin of magnetic moment – Bohr magneton – comparison of Dia, Para and		Ferro magnetism –

Domain theory – Hysteresis – soft and hard magnetic materials – antiferromagnetic materials – Ferrites and its applications

Superconductivity : properties – Type I and Type II superconductors – BCS theory of superconductivity(Qualitative) - High T_c superconductors – Applications of superconductors – SQUID, cryotron, magnetic levitation.

UNIT IV      DIELECTRIC MATERIALS                                                                                                 9

Electrical susceptibility – dielectric constant – electronic, ionic, orientational and space charge polarization – frequency and temperature dependence of polarisation – internal field – Claussius – Mosotti relation (derivation) – dielectric loss – dielectric breakdown – uses of dielectric materials (capacitor and transformer) – ferroelectricity and applications.

UNIT VADVANCED  ENGINEERING MATERIALS

9

Metallic glasses: preparation, properties and applications. Shape memory alloys (SMA): Characteristics, properties of NiTi alloy, application, Nanomaterials– Preparation -pulsed laser deposition – chemical vapour deposition – Applications – NLO materials –Birefringence- optical Kerr effect – Classification of Biomaterials and its applications

TOTAL: 45 PERIODS

25

OUTCOMES:

The students will have the knowledge on physics of materials and that knowledge will be used by them in different engineering and technology applications

TEXT BOOKS:

1.    Arumugam M., Materials Science. Anuradha publishers, 2010

2.    Pillai S.O., Solid State Physics. New Age International(P) Ltd., publishers, 2009

REFERENCES:

1.    Palanisamy P.K. Materials Science. SCITECH Publishers, 2011

2.    Senthilkumar G. Engineering Physics II. VRB Publishers, 2011

3.      Mani P. Engineering Physics II. Dhanam Publications, 2011

4.    Marikani A. Engineering Physics. PHI Learning Pvt., India, 2009