What are all the planes in {101} family of an orthorhombic lattice?

2. A 2D representation of crystalline structure is shown below. Please indicate the type of defects in these crystalline materials: (d) (a) (b) (c)

Determine the angles a, ß, and y that are listed in the cubic unit cell provided. Enter the angles in degrees. Note: You should be able to use basic facts about cube geometry and crystallographic convention to solve this, rather than elaborate direction cosine equations. [00 1] (0 0 1) [1O 1] [11 1) (1 1 1) a = i B = i

Determine the indices for the directions shown in the following cubic unit cell. Part 1 Z We begin with Direction A. (a) What is the x coordinate of the vector tail (x₁)? (b) What is the x coordinate of the vector head (x2)? (c) What is the y coordinate of the vector tail (y₁)? (d) What is the y coordinate of the vector head (y2)? (e) What is the z coordinate of the vector tail (2₁)? (f) What is the z coordinate of the vector head (z₂)? Fractional entries should be expressed in decimal form. H +y

HCP crystals have a higher atomic packing factor than BCC crystals. Explain either way. Moving to another question will save this response. L W

Draw by hand the crystal planes (110) (111) (101) for the body-centered cubic system and the close-packed hexagonal system

(c) Determine the indices for the directions shown for A, B, C and D in the cubic unit cell in Figure Q1(c). +z A D +y Figure Q1(c). 1/2

Within a cubic unit cell, sketch the following directions: (a) [110] (b) [121] (c) [012] (d) [133]

Q.1. Determine the Miller-Bravais indices for the plane shown with the question mark (?) in the following hexagonal unit cell. Note: Don't forget to explain and show all steps (īo10) az a3 a1 (0001)

Q4). Sketch the [112 2 ] plane in the outline of the hexagonal lattice below a P