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 th 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]

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

Preliminary teaching schedule • Lectures on Thursdays 12:15-14:00 • Exercises and lab on Wednesdays 12:15- 16:00 (not every Wednesday)

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) 5.4.1-5.4.3 + primer Thursday 15.02.2018 12:15-14:00 Lecture Inelastic form factors (03) on Dirac notation Wednesday 21.02.2018 12:15-16:00 Lab/Colloquium No class 5.4.4-5.4.7, W&C 39, plus Brehm and Mullin on parity and Inelastic form factors, scattering cross sections, dipole selection rules dipole selectrion Thursday 22.02.2018 12:15-14:00 Lecture (04) rules Wednesday 28.02.2018 12:15-16:00 Lab/Colloquium Thursday 01.03.2018 12:15-14:00 Lecture

1 n m Interface termination in ZnO/Cu 2 O

• 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 • ++

Electron beam – sample interaction W&C

Scattering with energy transfer Inelastic scattering:  E E 0    0  k k ' 0 F&H

Scattering without energy transfer  E E k ’ 0    k 0 0  k k ' 0 D k F&H

Diffraction

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?