File:Brillouin-zone construction by 300keV electrons.jpg
Size of this preview: 775 × 600 pixels. Other resolutions: 310 × 240 pixels | 621 × 480 pixels.
Original file (800 × 619 pixels, file size: 31 KB, MIME type: image/jpeg)
File information
Structured data
Captions
Summary edit
DescriptionBrillouin-zone construction by 300keV electrons.jpg |
English: Selected area electron diffraction (SAED) pattern of a thick Si specimen with many diffusely-scattered 100keV electrons, and a beam direction nearly parallel to the Si<111> zone.
The λ ≈ 0.0370 Å electron-wavelength makes the radius 1/λ Ewald-sphere nearly planar on the scale of the inner-star radius g220 ≡ 1/d220 ≈ 1/1.92Å, and the beam half-angle facilitates weak excitation of many Bragg-reflections even though no reflections are at the Bragg-condition (where a Kikuchi-band in the star-pattern e.g. of width θscatt = 2θBragg = 2asin[λ/(2d220)] ≈ 19.2 mrad would have been shifted to intersect both the incident beam's central dot and a diffraction spot). These electrons either had enough leptonic-imagination by themselves to construct the 2D Wigner-Seitz cell[1] (lattice-point bisectors) for this reciprocal-lattice slice, or else Brillouin-zone surfaces in a crystal are so real that they can be directly imaged. What do you think? |
Date | |
Source | Own work |
Author | P. Fraundorf |
Footnotes edit
- ↑ J. M. Ziman (1972 2nd ed) Principles of the theory of solids (Cambridge U. Press, Cambridge UK).
Licensing edit
I, the copyright holder of this work, hereby publish it under the following license:
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 18:52, 9 October 2013 | 800 × 619 (31 KB) | Unitsphere (talk | contribs) | User created page with UploadWizard |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
- File:0601sa11di111.jpg (file redirect)
File usage on other wikis
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on en.wikipedia.org
- Usage on fi.wikipedia.org
- Usage on uk.wikipedia.org
- Usage on zh.wikipedia.org