IIT BHU Varanasi Syllabus Materials Science
Crystal Structure: Unit cell, crystallographic directions and planes, crystal symmetry, point groups, space groups.
Close packed crystal structures and coordination polyhedra. Common metallic structures. Density calculations.
Types of Crystal structures; AX, AmXp and Am Bn Xp type crystal structures. Structure of Rock salt, rutile, zinc
blend, wurtzite, cesium chloride, cadmium iodide, perovskites, spinel, garnet, high Tc super conductors. Structure of
silicates (Orthosilicates, pyrosilicates, single chain, double chain, sheet and network silicates), Zeolites and Polymers. Crystal Imperfections: Types of defects, Points Defects; Kro’ger Vink notations, Thermodynamics of
point defects, Elementary defect chemistry. Effect of impurities on concentration of defects. Intrinsic and extrinsic
donors and acceptors. Line defects: Edge and screw dislocations, Burger vector, Slip systems, Energy of
dislocations, Interaction between dislocations motion, plastic deformation, Frank Read source. Strengthening
mechanisms. Electrical Properties: Conductivity of Metals. Mattheisen’s Rule, Sommerfield , Band Theory of
Solids. Metals, Semiconductors and Insulators. Intrinsic and Extrinsic Semiconductors. Concentration and mobility
of charge carriers and their variation with temperature. Semi-conducting materials. Magnetic Properties: Origin of
Ferromagnetism and hysteresis loop, Domains and Magnetic Anisotropy, Magnetostriction. Soft and Hard Magnetic
Materials and their Applications. Optical Properties: Interaction of Electromagnetic waves with matter. Absorption,
reflection, transmittance and colour of materials. Lasers.