Digitale Medien
Oxford [u.a.]
:
International Union of Crystallography (IUCr)
Acta crystallographica
56 (2000), S. 916-918
ISSN:
1600-5759
Quelle:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Thema:
Chemie und Pharmazie
,
Geologie und Paläontologie
,
Physik
Notizen:
The present structure determination of silver niobium trioxide at 291 K was performed on a twinned single crystal with a predominant presence [about 93 (1)%] of one twin domain. The sample contained traces of V (about 1 atomic %). This study confirms that the room-temperature phase of AgNbO3 is isostructural with the room-temperature phase of NaNbO3, i.e. it is a tilted perovskite. Structural deviation in AgNbO3 from centrosymmetry was not detected in this study and its structure was refined in Pbcm, though a previous study indicated ferroelectricity below 350 K, in contrast with NaNbO3.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1107/S0108270100006806
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