In a cubic unit cell denote the X, Y and Z axes of coordinates and locate the [1
ID: 1854435 • Letter: I
Question
In a cubic unit cell denote the X, Y and Z axes of coordinates and locate the [1, -11] and [02-3] directions within. Find and denote the Miller indices of the directions shown in the given figure. Find through proper steps the Miller indices of the two planes ABC & ADE given in the figure. Denote within a cubic unit cell the planes (1-11) and (012) A brass alloy has an FCC structure and has 25at.% Zn and 75at.% Cu atoms. What will be the density of this brass? To get the lattice parameter'a', use the radii of the two atom kinds: rZn = 0.133 nm; rCu = 0.128 nm, find the average radius corresponding to the composition 25% Zn and 75% Cu and use it in relevant equation. However, do not average the atomic weights. Use the composition to figure out the masses of atoms. At. wts.: Zn = 65.41; Cu = 63.55. At what angle will a specimen of this brass diffract X-rays of wave length 0.15418 nm from the {220} sets of atomic planes? TiO has the NaCl type crystal structure. Radius of the Ti ion is 0.068 nm, that of O-ion is 0.140 nm. Calculate the atomic packing efficiency in this crystalline material. Calculate the interplanar spacing for the (110} family of planes. Ge has the diamond cubic crystal structure. Its radius is rGe = 0.122 nm. Within a supposed cubic unit cell of Ge: Locate and identify the four inner atoms by their positional parameters. Show one coordination polyhedron around a Ge atom. Show the (1-11) atomic plane within the unit cell. What is the d-spacing of this plane? At what angle will it diffract X-rays of wave length 0.07107 nm?Explanation / Answer
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