FYS5310/FYS9320 Electron Microscopy, Electron Diffraction and - - PowerPoint PPT Presentation

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FYS5310/FYS9320 Electron Microscopy, Electron Diffraction and - - PowerPoint PPT Presentation

FYS5310/FYS9320 Electron Microscopy, Electron Diffraction and Spectroscopy II Spring 2018 Electron Microscopy, Electron Diffraction and Spectroscopy II Fultz & Howe. Transmission Electron Microscopy and Diffractometry of Materials. 4


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Spring 2018

FYS5310/FYS9320 Electron Microscopy, Electron Diffraction and Spectroscopy II

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Electron Microscopy, Electron Diffraction and Spectroscopy II

  • Fultz & Howe. Transmission Electron Microscopy and Diffractometry of
  • Materials. 4th ed. Springer, 2013. [F&H]

– In particular chapters 4, 5, 12

  • Williams & Carter. Transmission Electron Microscopy. 2nd ed. Springer,
  • 2009. [W&C]

– In particular parts 3 & 4

  • Various articles and papers (mandatory for PhD students)
  • Handouts and lectures
  • Ray Egerton. Electron Energy-Loss Spectroscopy in the Electron Microscope
  • Pennycook & Nellist. Scanning Transmission Electron Microscopy: Imaging and
  • Analysis. [P&N]
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Preliminary teaching schedule

Lectures: 2-4 hours per week Exercises and lab: 0-4 hours per week (on average 4 hours teaching per week)

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Preliminary teaching schedule

  • Lectures on Thursdays 12:15-14:00
  • Exercises and lab on Wednesdays 12:15-

16:00 (not every Wednesday)

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FYS5310 teaching schedule

Preliminary schedule only! You should keep the class-times on Wednesdays and Thursdays open unless notified by email (or in this schedule) that there is no class References to the textbook to Fultz & Howe unless stated otherwise.

Date Time Lecture/lab Topic Chapters Homework

Thursday 18.01.2017 12:15-14:00 Lecture Introduction to the course Wednesday 24.01.2018 12:15-16:00 Lab/Colloquium No class Thursday 25.01.2018 12:15-14:00 Lecture Derviation of the structure factor and the atomic form factor (01) 4.1, 4.3, 6.1 Wednesday 31.01.2018 12:15-16:00 Lab/Colloquium Going though exercise set 1 Exercise set 1 (handout) Thursday 01.02.2018 12:15-14:00 Lecture No class Wednesday 07.02.2018 12:15-16:00 Lab/Colloquium Going though exercise set 2 Excercise set 2 (handout) Thursday 08.02.2018 12:15-14:00 Lecture Uses of EELS and EELS instrumentation (02) 5.1, 5.2; W&C 37 Wednesday 14.02.2018 12:15-16:00 Lab/Colloquium Going though exercise set 3 Exercise set 3 (handout) Thursday 15.02.2018 12:15-14:00 Lecture Inelastic form factors (03) 5.4.1-5.4.3 + primer

  • n Dirac notation

Wednesday 21.02.2018 12:15-16:00 Lab/Colloquium No class Thursday 22.02.2018 12:15-14:00 Lecture Inelastic form factors, scattering cross sections, dipole selection rules (04) 5.4.4-5.4.7, W&C 39, plus Brehm and Mullin on parity and dipole selectrion rules Wednesday 28.02.2018 12:15-16:00 Lab/Colloquium Thursday 01.03.2018 12:15-14:00 Lecture

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Interface termination in ZnO/Cu2O

1 n m

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  • Parallell beam electron diffraction
  • Convergent beam electron diffraction
  • Brightfield and darkfield imaging
  • High resolution imaging
  • Brightfield scanning transmission electron microscopy
  • Darkfield scanning transmission electron microscopy
  • X-ray microanalysis composition analysis
  • X-ray microanalysis elemental mapping
  • Electron holography and phase reconstruction
  • Electron energy loss spectroscopy
  • Electron energy loss spectroscopic imaging and

mapping

  • ++
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Electron beam – sample interaction

W&C

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Scattering with energy transfer

F&H

' k k E E     

Inelastic scattering:

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Scattering without energy transfer

F&H

' k k E E     

k0 k’ Dk

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Diffraction

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Bragg’s law

  • Is this a good model?

– It’s simple – It «works»

  • But does it capture the physics of what is

happening?

– Do «atomic planes» scatter? – How can we handle more disordered systems?