HW8_MEMS1054_AY2111

HW8_MEMS1054_AY2111 - Homework #8 MEMS 1054 Crystal Defects...

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Homework #8 MEMS 1054 Crystal Defects NAME: Return by next Monday, December 6, 2010. 1) READ with comprehension Chapter 5 of ALLEN and THOMAS text “The Structure of Materials”. You should focus on the coverage of point defects, line defects (excluding disclinations), and planar defects. 2) Provide a solution to following questions from the end-of-chapter problems in Chapter 5 of the text by Allen and Thomas, The Structure of Materials: I) II) continued next page
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III)
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IV) V)
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VI) Two types of diffraction patterns can be generated in a transmission electron microscope (TEM), namely spot patterns and ring patterns. The spot patterns consist of Laue spots hkl and the ring patterns consist of concentric Laue rings with indices hkl. The schematic below shows an experimental diffraction pattern obtained from a TEM specimen of the face-centered cubic TiC (lattice parameter a=4.32Å) on which nanoparticles of gold (Au, a=4.08Å) have been evaporated. The indices for the Au rings are 111, 200, 220, 311 and 222. The values R for the three arrowed
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This note was uploaded on 01/07/2011 for the course MEMS Mems1054 taught by Professor Wiezorek during the Fall '10 term at Pittsburgh.

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HW8_MEMS1054_AY2111 - Homework #8 MEMS 1054 Crystal Defects...

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