17EC554 Electrical Engineering Materials syllabus for TE

Band Theory of Solids:

Introduction to free electron theory, Kroning-Penney Model, Explanation for Discontinuities in E vs. K curve, Formation of Solid Material, Formation of Band in Metals, Formation of Bands in Semiconductors and Insulating Materials, Classification of Materials on the Basis of Band Structure, Explanation for differences in the Electrical properties of different Materials. Important Characteristics of a Band Electron, Number of energy states per band, Explanation for Insulating and Metallic Behavior of Materials, Concept of Hole. L1, L2

Magnetic Properties of Materials:

Introduction, Origin of Magnetism, Basic Terms in Magnetism, Relation between Magnetic Permeability and Susceptibility, Classification of magnetic Materials, Characteristics of Diamagnetic Materials, Paramagnetic Materials, Ferromagnetic Materials, Ferrimagnetic Materials, Langevin‘s Theory of Diamagnetism, Explanation of Dia, Para and Ferromagnetism, Ampere‘s Lam in Dia, Para and Ferromagnetism, Hystersis and Hystersis loss, Langevin‘s Theory of paramagnetism, Modification in the Langevin‘s Theory, Anti-Ferromagnetism and Neel Temperature, Ferrimagnetic Materials, Properties of some important Magnetic Materials, Magentostriction and Magnetostrictive Materials, Hard and Soft Ferromagnetic Materials and their Applications. L1, L2

Behavior of Dielectric Materials in AC and DC Fields:

Introduction, Classification of Dielectric Materials at Microscopic level, Polar Dielectric Materials, Non-polar Dielectric Materials, Kinds of Polarizations, behavior of dielectric materials, Three electric Vectors, Gauss‘s Law in a Dielectric, Electric Susceptibility and Static Dielectric constant, Effect of Dielectric medium upon capacitance, macroscopic electric field, Microscopic Electric field, temperature dependence of dielectric constant, polar dielectric in ac and dc fields, behavior of polar dielectric at high frequencies, Dielectric loss, Dielectric strength and Dielectric Breakdown, Various kinds of Dielectric Materials, Hysteresis in Ferroelectric Materials, Applications of Ferroelectric Materials in Devices. L1, L2

Conductivity of Metals and Superconductivity:

Introduction, Ohm‘s law, Explanation for the dependence of electrical resistivity upon temperature, Free-electron theory of metals, Application of Lorentz-Drude free-electron theory, Effect of various parameters on Electrical Conductivity, Resistivity Ratio, Variation of resistivity of alloys with temperature, Thermal Conductivity of Materials, Heat produced in Current Carrying Conductor, Thermoelectric Effect, Thermoelectric Series, Seebeck‘s Experiment.

Discovery of superconductivity, superconductivity and transition temperature, superconducting materials, explanation of superconductivity phenomenon, characteristics of superconductors, change in thermodynamic parameters in superconducting state, frequency dependence of superconductivity, current status of high temperature superconductors, practical applications of superconductors. L1, L2

Electrical Conducting and Insulating materials:

Introduction, Classification of conducting materials, difference in properties of Hard-Drawn and Annealed copper, standard conductors, comparison between some popular Low-Resistivity Materials, LowResistivity Copper Alloys, Electrical contact materials and their selection, classification of contact materials, Materials for Lamp Filaments, Preparation of Tungsten Filaments.

Insulating gases, Liquids and solids and their characteristics, Selection of the insulating material, other important properties of Insulating materials, Thermal characteristics, chemical properties of Insulating materials, classification of Insulating materials on the basis of structure. L1, L2

Course Outcomes:

At the end of the course, students will be able to

• Understand the various kinds of materials and their applications in ac and dc fields.
• Understand the conductivity of superconductivity of materials.
• Explain the electrical properties of different materials and metallic behavior of materials on the basis of band theory.
• Explain the properties and applications of all kind of magnetic materials.
• Explain the properties of electrical conducting and insulating materials.
• Assess a variety of approaches in developing new materials with enhanced performance to replace existing materials.

Text Book:

R K Shukla and Archana Singh, ―Electrical Engineering Materials‖ McGraw Hill, 2012, ISBN: 978-1-25-90062-03.

Reference Books:

1. S.O. KASAP, ―Electronic Materials and Devices‖ 3rd edition, McGraw Hill, 2014, ISBN-978-0-07-064820-3.

2. C.S.Indulkar and S. Thiruvengadam, S., ―An Introduction to Electrical Engineering Materials‖, ISBN-9788121906661.