Lecture 15: XRD and Other Analytical Techniques X-Ray Diffraction ...

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d 200 = 2Å ?

lots of atoms => intense diffraction

peaks

d 200

d 100 = 4Å ?

no diffraction (EXTINCTION)

d 100

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d 200 = 2Å ? lots of atoms => intense diffraction peaks d 200 d 100 = 4Å ? no diffraction (EXTINCTION) d 100

Extinctions: due to destructive interference, one plane of atoms ‘cancels’ diffraction from another plane Note: End-centered, Body-centered unit cells will result in extinctions

Page 1 and 2: Lecture 15: XRD and Other Analytica
Page 3: d 010 = 6Å ? lots of atoms => inte
Page 7 and 8: 2 Types of XRD: (1) Single Crystal:
Page 9 and 10: Peak intensity reflects: 1. density
Page 11 and 12: (2) Electron Microscope "! use elec
Page 13 and 14: . Scanning Electron Microscope (SEM
Page 15 and 16: (3) Atomic Force Microscopy "! moun

Lecture 15: XRD and Other Analytical Techniques X-Ray Diffraction ...

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