Electron microscopy
 
Tetrahedral Structure in Amorphous Materials
- Practical Electron Microscopy and Database -
- An Online Book -
Microanalysis | EM Book                                                                                   http://www.globalsino.com/EM/        

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Tetrahedral structure extensively exists in amorphous materials. For instance, in fully amorphous silica glass, each silicon (Si) atom is tetrahedrally surrounded by four oxygen (O) atoms at 1.62 Å, and the oxygen–oxygen separation is typically 2.65 Å. This phenomenon is call short-range ordering.

 

 

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