Paper Title:
Dynamic and Static Displacements of Atoms in B2-Phase of TiNi Alloy
  Abstract

We measured integrated intensities of 26 reflections of the B2-phase of titanium nickelide single crystal and determined structure factors for these reflections. Based on the structure factors, mean squares of displacements of Ni and Ti atoms with respect to the crystal-lattice sites have been determined. After that we determined the mean squares of atomic displacements Ni and Ti in temperature range of existence of the B2-pase, at temperatures Т1=328 K and T2=376 K. We separated the mean squares of atomic displacements Ni and Ti into static and dynamic ones. The mean squares of dynamic displacements of Ni and Ti atoms are identical, but the mean square of static displacements is greater by a factor of 4.7 for Ni atoms than for Ti atoms. The Debye temperature calculated from the mean squares of displacements of Ni atoms is 360 K; that calculated for Ti atoms in a similar way is 390 K. The large value of complete atomic displacements in TiNi is due to static rather than dynamic displacements of atoms, mainly due to static displacements of nickel atoms.

  Info
Periodical
Edited by
Pietro VINCENZINI and Stefano BESSEGHINI
Pages
108-112
DOI
10.4028/www.scientific.net/AST.59.108
Citation
V. M. Gundyrev, V. I. Zel'dovich, "Dynamic and Static Displacements of Atoms in B2-Phase of TiNi Alloy", Advances in Science and Technology, Vol. 59, pp. 108-112, 2008
Online since
September 2008
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