In a cubic unit cell denote the X, Y and Z axes of coordinates and locate the [1
ID: 1854436 • 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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