M.Sc. DEGREE EXAMINATION, NOVEMBER 2017
First Semester
Physics
Elective CRYSTAL GROWTH AND THIN FILMS
(CBCS 2014 onwards)
Time 3 Hours Maximum 75 Marks
Section A (10 x 2 20)
Answer all the questions.
1. What are the main advantages of temperature gradient
method?
2. List out the equipments required for the growth of
crystals.
3. What are the results of crystallization of cystine.
4. Name the three major mineral phases associated with
joint diseases.
5. Name the factors and classes for the chemical vapour
transport representatives.
6. Name the various factors that supplement energy for the
chemical reaction and decomposition.
7. Give the reactions involved in vapour plating method.
8. Define Faraday's law of electrodeposition.
9. What is Laue's technique?
10. Define atomic form factor and geometrical structure
factor.
Sub. Code
4MPH1E2
AFF-4862
2
Ws9
Section B x 5 25)
Answer all the questions.
11. Briefly list out the desirable properties of an ideal
solvent in the preparation of crystal growth.
Or
Explain about the constant temperature bath.
12. Explain about the structure of Gel.
Or
What are the advantages of Gel method?
13. With a block diagram explain the fundamental
aspects of vapour phase growth.
Or
List out the different kinds of vapour growth
processes. Write a note on physical vapour
deposition.
14. Explain about glow discharge sputtering method.
Or
Write a brief note about Reactive sputtering and
R.F. sputtering.
15. Describe a rotating crystal method with a diagram.
Or
Explain the surface morphology method for an
anisotropic wet chemical etching process for a
crystalline silicon material.
AFF-4862
3
Ws9
Section C 10 30)
Answer any three questions.
16. Write a brief note on KDP and ADP crystals,
structure and properties.
Explain about seed preparation, mounting and
seasoning.
What are the principles of flux growth.
17. Explain single diffusion method double diffusion
method. Write a brief note on the growth of cholesterol
crystals.
18. Describe briefly about the fundamentals of chemical
vapour transport, criteria for the choice and about its
specifications.
19. Explain about deposition technology in detail and also
about distribution of deposits.
20. Explain a UV absorption spectrometer with a block
diagram. Mention its advantages and uses. Write a brief
note about vickers micro hardness tester.
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