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A high-resolution electron microscopic study of defects in sodium β′″-alumina |
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| Authors: | R. Hull David J. Smith C. J. Humphreys |
| Abstract: | A high-resolution electron-microscopic study of sodium β′″-alumina, a polytype of the more-widely-studied sodium β- and β″-alumina, has been undertaken using the 600 kV instrument at Cambridge University. Images revealed the loss of sodium-containing planes, which had caused crystals to collapse and shear into defect layers. A model for the structure of these defects is proposed, based on the use of computed images and by comparison with high-resolution images of silver β″-alumina. |
| Keywords: | High resolution electron microscopy sodium β -alumina superionic conductors structure imaging conduction planes image simulations |