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X-ray powder diffraction of β-aluminas (1982)

Massarotti, V. ; Campari-Vigano, G. ; Flor, G. ; [et al.]

Copenhagen : International Union of Crystallography (IUCr)

Applied crystallography online 15 (1982), S. 471-475

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ISSN: 1600-5767

Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Topics: Geosciences , Physics

Notes: The structure of the β-alumina mirror plane is investigated with a powder diffraction technique in several crystals: Ag β, dehydrated Na β and hydrated Na β. At 295 and 423 K, an Ag+ distribution is found which agrees with that reported in the literature. With increasing temperature from 423 to 879 K, the Ag+ fraction in the aBR (anti-Beevers–Ross) sites decreases from 0.34 to 0.15. Hydration of Na β-alumina crystals does not seem to cause an appreciable change in the Na+ distribution. Analysis of the reflection intensities gives the exact quantity of absorbed water.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1107/S0021889882012448

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