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Solid State Physics
What are ferroelectric materials? Explain with the example of BaTiO3. How are they
different from piezoelectric materials?
different from piezoelectric materials?
Solid State Physics
What are transducers? Explain the working principle of a peizielectric transducer
Solid State Physics
Explain the three types of defects in crystals
Solid State Physics
Calculate the magnetic moment of Co Fe O4.
3
2
2+ +
3
2
2+ +
Solid State Physics
The interaction energy between Na+ and Cl− ions in the NaCl crystal can be written as
×
+
×
= −
− −
8
4.03 10 28 6.97 10 96
( )
r r
E r where the energy is given in Joules per ion pair, and
the interionic separation r is in meters. Calculate the binding energy and the equilibrium ionic
separation in the crystal.
×
+
×
= −
− −
8
4.03 10 28 6.97 10 96
( )
r r
E r where the energy is given in Joules per ion pair, and
the interionic separation r is in meters. Calculate the binding energy and the equilibrium ionic
separation in the crystal.
Solid State Physics
The direct lattice vectors for a lattice are given by:
a i a [ˆi 3ˆj]and a kˆ
2
ˆ ;
1 2 3 c
a
= a = + =
r r r
Obtain the volume of the primitive cell and the reciprocal lattice vectors
a i a [ˆi 3ˆj]and a kˆ
2
ˆ ;
1 2 3 c
a
= a = + =
r r r
Obtain the volume of the primitive cell and the reciprocal lattice vectors
Solid State Physics
A crystal has a cubic unit cell of 4.2 Å. Using a wavelength of 1.54 Å at what angle (2)
would you expect to measure the (111) peak
would you expect to measure the (111) peak
Solid State Physics
Obtain an expression for paramagnetic susceptibility of free electrons on the basis of the
classical laws. Discuss its inadequacy and show pouli modified it.
classical laws. Discuss its inadequacy and show pouli modified it.
Solid State Physics
how shock wave front is generated in a piece of material subjected to extension with some velocity on the free end and other end fixed.
Solid State Physics
A laser beam of wavelength 6X10-7 m , coherence width 8X10-3m and power 10mW shines on a surface 100m away. Deduce the illumination , compare it with that due to a collimated beam from a torch filament of diameter 0.1cm , lens of focal length 10cm and power 10W.
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#340153 on Dec 2023
#340153 on Dec 2023