Digitale Medien
Copenhagen
:
International Union of Crystallography (IUCr)
Applied crystallography online
14 (1981), S. 38-42
ISSN:
1600-5767
Quelle:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Thema:
Geologie und Paläontologie
,
Physik
Notizen:
Electron-induced defects in β′′′′-alumina, Na2O.3MgO.7Al2O3, are examined by high resolution electron microscopy. The phenomena can be reasonably explained in the same manner as previously done for a similar case in β′′′′-alumina [Matsui & Horiuchi (1981). Acta Cryst. A37, 51–61]; two spinel-like blocks (each having six oxygen layers) on both sides of the lost conduction plane are directly combined to form cubic close packing of twelve oxygen layers through the minimum shift vectors. The arrangements of cations in a resultant defect block are slightly different from those in the spinel lamella of the same thickness.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1107/S0021889881008637
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