Assignment No. 5 (BEL-06)
Q. No. 1 03
A plane makes intercepts of 1, 2 and 3 Å on the crystallographic axes of an orthorhombic crystal
with a:b:c = 3:2:1. Determine the Miller Indices of this plane
Q. No. 2 02+01=03
The primitive translation vectors of a hexagonal structure may be taken as;
(
) (√
) (
) (√
) and ( )
a) Determine the primitive lattice vector of the reciprocal lattice
b) What is the conclusion from the result of reciprocal lattice vector
Q. No. 3 1.5 + 1.5 = 03
a) Calculate the Fermi Energy of electrons at 0K for a metal with electron density of 1028m-3.
b) Silver fcc has an atomic radius of 1.44 Å. Calculate the value of Fermi Energy.
Q. No. 4 03 + 03 = 06
Explain about the Applications of Free Electron Gas Model
May 19, 2012 on Saturday