Electronic Resource
[S.l.]
:
International Union of Crystallography (IUCr)
Acta crystallographica
55 (1999), S. 803-810
ISSN:
1600-5724
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Chemistry and Pharmacology
,
Geosciences
,
Physics
Notes:
The structure of the R phase of the alloy Ti50Ni48.7Co1.3 was determined by the crystallogeometric analysis of martensitic transformations in titanium nickelide. This analysis is based on the concept of cooperative thermal vibrations of the (110)-like planes in the b.c.c. and B2 structures and their freezing (transformation to static displacements) at the point of the phase transition. The space group of the R phase is trigonal P31m with a hexagonal Bravais lattice. The validity of the R-phase structure determination is confirmed by an X-ray diffraction pattern that was obtained at room temperature using Cu Kα radiation. The Rietveld procedure was used to compare the calculated and experimental X-ray diffraction patterns. The proposed structural model of the R phase agrees satisfactorily with the experimental data.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0108767399001610
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