ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
Satellite reflections appear parallel to c*: only even and odd orders around main reflections with h and k both even and both odd, respectively, which are explained by assuming that two kinds of out-of-step vectors, such as (a + b)/4 and (a - b)/4, occur alternately at intervals of c/4 along the orthorhombic c axis. The main origin of the superstructure is the ordering of the Fe vacancies, the distribution of which in four different Fe rows parallel to the c axis is studied in terms of Fourier expansion.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0567739481000715
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