Materials Transactions Online

Materials Transactions, Vol.47 No.03 (2006) pp.677-681
© 2006 The Japan Institute of Metals

Root-Mean-Square Displacements of Atoms in the B2-Phase of Titanium Nickelide

Vyacheslav M. Gundyrev and Vitaly I. Zel'dovich

Institute of Metal Physics, Ural Division, Russian Academy of Science, S. Kovalevskaya Str. 18, Ekaterinburg, 620041 Russia

Using of MoKα radiation, on a single crystal of a titanium nickelide intensities of 15 structural and 11 superstructural reflections of the B2-phase are measured. Structural factors of scattering for these reflections are calculated, and root-mean-square displacements of atoms of nickel and atoms of titanium from positions of equilibrium are determined. The mean square of displacements of atoms of nickel is equal < u2>Ni=(8.7± 0.6)× 10-4 nm2, atoms of titanium -< u2>Ti=(3.9± 0.3)× 10-4 nm2.

(Received 2005/9/20; Accepted 2005/11/28; Published 2006/3/15)

Keywords: titanium nickelide, single crystal, X-ray study, intensity reflections, structural and superstructural reflections, root-mean-square displacements of atoms

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