Question

3. (a) Within a cubic unit-cell, sketch the following crystallographic directions: T10], T21], [OT2], [123], [t0]. [133], [TI], [T22] Note: (i) for the first four directions, use Block A and for the last four directions use Block B, given in the next page. (ii) Rescaling dimensions to not exceed unity for directions in Block A is permitted. (b) Sketch following crystallographic planes (each in a separate unit-cell): (101), (121), (110), (236), (1T00) Note: Use similar Blocks/Hexagons to present each plane Block A Block B

Answer 1

first part b is solved

1: (101)

BLock A Clol)

2: (121)

BLOCK AZ (131

3: (110)

BLock A Cllo)

4: (236)

In this one finding the intercepts is very important to solve it.

BLock A R 36 3M miller nhus36) in

5: (1-100)

(Too)

PART A

This is the solution of first four parts (due to time shortage other parts are not done)(also block A and B are same)(try to do others by yourself)

1:[123]

BLOCK [133] ↑ [123) (1

try to follow the arrows from 1 to 3,i.e. first of x direction then y and then z direction. the point where z-direction arrow ends , join that point from origin, that will be your direction.

2: [-110]

3LOCK α九 -1

3: [-1-21]

ITR1) AZ BLOCK A

4: [0-12]

BLOCK

please let me know if you don't understand something, as drawings are not up to the marks due to time shortage.