(a) Describe what is meant by Miller indices. Illustrate your answer with diagrams of (101), (013)...

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(a) Describe what is meant by Miller indices. Illustrate your answer with diagrams of (101), (013) and (122) planes of a general solid phase (20) (b) Show the arrangement of lattice points in Body-centred, Face-centred and Base- centred unit cells. (10) (c) A second order reflection from the (111) plane is observed for a BCC (body- centred cubic) material with 20 = 24.6° with X-ray wavelength of λ =1.54 Å. Calculate the lattice constant. (20) (d) Elemental gold has a cubic close packed (CCP) structure. Draw the unit cell of a CCP structure. What is the coordination number of each atom, and how many atoms are there per unit cell? Justify your answer. (a) Describe what is meant by Miller indices. Illustrate your answer with diagrams of (101), (013) and (122) planes of a general solid phase (20) (b) Show the arrangement of lattice points in Body-centred, Face-centred and Base- centred unit cells. (10) (c) A second order reflection from the (111) plane is observed for a BCC (body- centred cubic) material with 20 = 24.6° with X-ray wavelength of λ =1.54 Å. Calculate the lattice constant. (20) (d) Elemental gold has a cubic close packed (CCP) structure. Draw the unit cell of a CCP structure. What is the coordination number of each atom, and how many atoms are there per unit cell? Justify your answer.

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a Miller indices are a set of integers used to describe planes or directions in a crystal lattice Th... View the full answer