Notes

ক্রিস্টাল থেকে এইগুলো আসার সম্ভাবনা বেশী..
1.Write the name of the 14 arrangement in 3D Dimension of Bravais lattice.
2.What is crystal? What are the types of crystal?
3.Define the characteristic of cubic crystal system?
4.What is miller indices? What are the importance of miller indices?
5.Draw the crystal plane and direction of A ((1 ) ̅2 ̅1 ̅)and B (2 ̅1 ̅0) Plane. Find the angle between A and B plane. Is it parallel or perpendicular?

1. Classification of Engineering Materials, Classification of Electrical Engineering Materials, classification chart of electrical engineering materials.
Conductors, Semiconductors (Intrinsic semiconductors, extrinsic semiconductors and their properties), Insulators,
2. Electrical Properties of Engineering Materials(Resistivity, Conductivity, Temperature coefficient of Resistance , Permittivity, Thermoelectricity )

Crystal structures:

Classical theory:
Mobility,resistivity,Hall effect, equation of hall voltage, thermal conductivity,Wiedmann Franz law(relation between thermal conductivity and electrical conductivity), ohm’s law in terms of conductivity, the conductivity of electron in term of mobility of electron (), drift velocity definition and expression, Matthiessen’s rule..
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Quantum mechanics:
Wave function, Discuss Schrodinger’s equation, Solve the Schrodinger equation for a free e- whose energy is E. What is the uncertainty in the position of the electron and the uncertainty in the momentum of the electron

Magnetic properties of material:
Types of Dipoles(electric dipole, magnetic dipole), magnetic dipole moment, Permittivity & Permeability, Differences between the Permittivity and permeability, Magnetic susceptibility ,Magnetization, Relative permittivity, Magnetic material (Ferromagnetic materials , Paramagnetic material , Diamagnetic materials , Antiferromagnetic materials , Ferrites ), Magnetic Properties of Engineering Materials(Permeability, Retentivity or Magnetic Hysteresis , Coercive force , Reluctance)

Band theory:
Energy bands(Valence Band, Conduction Band),
Carrier statistics:
Fermi Dirac Distribution Function definition, Maxwell-Boltzmann statistics, Fermi level,
Fermi Level in Semiconductors, Fermi Energy,


Math: Calculate the Fermi energy EFO at 0K for copper and estimate the average speed of the conduction electrons in Cu. The density of Cu is 8.96 g cm-3 and the relative atomic mass is 63.5 .

Modern theory of metals:
Determination of Fermi energy, average energy of electron.

Dielectric property of material:
Dielectric constant, Polarization definition, electronic and orientational polarization, Clausius Mosoti equation.

Math__X) The Electronic polarizability of the Ar atom is 1.7*10-40Fm2. What is the static Dielectric constant of solid Ar if it’s density is 1.8 gcm-3.

Superconductivity:
Super conductor definition, properties and Condition of the superconductor, persistent current and critical current. Explain perfect diamagnetism of superconductor from the view point of Meissner-Ochsenfield experiment, Explain Meissner and Ochsenfield effect of superconductor, BCS (Bardeen Cooper Schrieffer) theory of superconductivity, London theory/equation of superconductivity.