In:
Acta Crystallographica Section B Structural Science, International Union of Crystallography (IUCr), Vol. 58, No. 2 ( 2002-04-01), p. 161-167
Abstract:
Twins and intergrown crystals of tetragonal rare earth boride carbides, especially those with the La 5 B 2 C 6 structure type, have been investigated by high-resolution electron microscopy and X-ray diffraction. The structure of the twin interface has been determined. It provides an explanation for coherently intergrown domains of different structure. The Sc 3 C 4 structure type is remarkable because it is frequently intergrown with La 5 B 2 C 6 -type phases. It provides, for instance, a model for the intergrowth of other types, e.g. Gd 4 B 3 C 4 and Gd 5 B 2 C 5 . The presence of metal-atom square nets in different orientations in the structures accounts for a number of intergrowth phenomena. The possibilities and limitations of X-ray structure determinations are discussed with respect to actual examples.
Type of Medium:
Online Resource
ISSN:
0108-7681
DOI:
10.1107/S0108768101019772
Language:
Unknown
Publisher:
International Union of Crystallography (IUCr)
Publication Date:
2002
detail.hit.zdb_id:
2020841-8
SSG:
13
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