please correct 2. The following table lists diffraction angles for the first three peaks (first-order) of the x-raydiffraction pattern for some metal. Monochromatic x-radiation having a wavelength of 0.0711 nmwas used.(a) Determine whether this metal's crystal structure is FCC, BCC or neither FCC or BCCand explain the reason for your choice.(b) If the crystal structure is either BCC or FCC, identify which of the metals gives thisdiffraction pattern (Check the reference book to identify the element). Justify your decision.Peak NumberDiffraction Angle(2q)118.27°25.96°331.92°

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Answered: 2. The following table lists…

Understanding Motor Controls

4th Edition

ISBN:9781337798686

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter44: Semiconductors

Section: Chapter Questions

Problem 4RQ

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When the iron metal sample with a density of 7.87 g cm³ was placed in an X-ray diffractometer using incoming X-rays with a wavelength of 0.1541 nm, a diffraction from the (110) planes was obtained at an angle of 22.35 ° (i) Using the defined axes as shown below, sketch the (110) crystallographic plane in a 3- dimension primitive cubic lattice. y (ii) What type of cubic lattice does this metal sample have if the order of diffraction, n=1?
2 Miscellaneous I (a) A certain metal has a BCC crystal structure, a density of 5.96 g/cm³, and an atomic weight of 50.9 g/mol. Calculate the atomic radius. (b) Compute the interplanar spacing for the (111) set of planes for this metal. Are these planes close- packed? (c) Determine the expected diffraction angle for this (111) set of planes when monochromatic radiation of wavelength 0.154 nm is used. (d) What is the metal used in this problem?
Consider two hypothetical metallic crystal structures A and B. A has an fcc and B a bcc lattice structure. Both have the same unit cell volume. The Atomic Packing Factor for A is 0.740 and that for B is 0.680. What is the ratio of the fcc to bcc atomic radii? (This question has only one correct answer) a. 0.82 b. 0.63 c. 0.92 d. 0.44 e. 1.21 Clear my choice
Consider two hypothetical metallic crystal structures A and b has an fcc and B a bcc lattice structure. Both have the same unit cell volume. The atomic packing factor for a is 0.740 and that for b is 0.680. what is the ratio of the fcc to bcc atomic radii? Select one of the answers below. a. 0.63 b. 0.82 c. 1.21 d. 0.92 e. 0.44
10- Iron, Fe, can have two different crystal structure (BCC and FCC). In order to determine the crystal structure, X-ray diffraction was measured and the diffraction pattern of an iron piece is given here. Based on this, calculate the lattice parameter of this sample and determine its crystal structure, knowing that lattice parameter of FCC and BCC iron are 0.35 nm and 0.28 nm, respectively. Hints: Assume n in Bragg's law =1, and wavelength of 0.154 nm. Intensity (relative) |A|AW|WN|Lista batnashchen women in 30.0 50.0 60.0 Diffraction angle 20 20.0 40.0 70.0 80.0
Consider two hypothetical metallic crystal structures A and B. A has an fcc and Ba bcc lattice structure. Both have the same unit cell volume. The Atomic Packing Factor for A is 0.740 and that for B is 0.680. What is the ratio of the fcc to bcc atomic radii? (This question has only one correct answer) а. 1.21 b. 0.82 O c. 0.92 d. 0.44 е. 0.63
Procedure You will do this experiment in two parts. In the first part, you will be provided data and asked to determine the crystal structure and lattice parameter that will allow you to identify the material. In the second part, you will be shown a strip of film from a diffraction camera. Using the film, you will determine the Bragg Angles, crystalline structure, and lattice parameter. Part 1 - During a lunar exploration an unknown metallic crystalline substance is discovered whose external morphology indicates that it is a cubic material. A diffraction pattern of this material, using radiation of wavelength 1.54Å, provides the following data: Bragg Diffraction Sin e, Sin' Diffraction Sine, Sin*e, Q? peak # angle. 19.1 #1 # 2 22.2 #3 32.2 # 4 38.8 #5 40.85 1. Construct a table similar to the one shown above. 2. Using the given diffraction data calculate sin 0 and sin? 0 for each diffraction peak. sin 0, sin $in' 3. Find the ratio of for each diffraction peak where sin² Oi, is the…
The metal niobium has a BCC crystal structure. If the angle of diffraction for the (211) set of planes occurs at 75.99° (first-order reflection) when monochromatic x-radiation having a wavelength of 0.1659 nm is used, compute the following: (a) The interplanar spacing for this set of planes i nm (b) The atomic radius for a Nb atom nm
a) Draw the [11 0], [-1 1 0], [ 0-1-1] directions for FCC and prove they are crystallographically equivalent. The family of directions is shown with these brackets. So we can say these directions are part of the family of directions. b) Draw the (1 o 0), (-1 0 0), (0 -1 0), and (00-1) planes for FCC and prove they are crystallographically equivalent. The family of directions is shown with {} these brackets. So we can say these planes are part of the {10 0} family of planes. h me Note that I cannot put a bar as the minus sign.
[X-ray diffraction] The first four peaks of the x-ray diffraction pattern for copper is shown below. It was taken usinga monochromatic radiation having a wavelength, λ. Copper has an FCC structure. Answer the following questions.(1) Specify indexes (i.e., (h k l)) for four peaks; peak 1, peak 2, peak 3 and peak 4. (2) The 2θ values for four peaks are given below. Determine the interplanar spacing (dhkl) for peak 1 and peak 2. (3) Determine the atomic radius (R) for peak 1 and peak 2. Use n = 1; λ = 0.1542 nm
Lead and Aluminum both have FCC crystal structures. Given the following information and knowing that solid aluminum has a density of 2.71 g/cm3, determine the density of solid lead in g/cm3 Atomic Weight (amu) Atomic Radius (nm) Aluminum 26.98 0.143 Lead 207.2 0.175
17- In a given FCC crystal unit cell with a lattice constant "a", calculate the planer density of atoms on (110) plane. A- 2/(a'V2) B- 1/(a'V2) C- 2/(a'V3/2) 2/(a') E- 1/(a') D-

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