A. Pojtinger et al., CHEMICAL AND TOPOLOGICAL SHORT-RANGE ORDER OF AMORPHOUS TI-SI ALLOYS, Zeitschrift fur Naturforschung. A, A journal of physical sciences, 50(8), 1995, pp. 749-757
Amorphous Ti100-xSix alloys (13 less than or equal to x less than or e
qual to 60) were produced by sputtering. Their partial structure facto
rs were determined by X-ray and neutron diffraction. The Bhatia-Thornt
on density-concentration correlation function G(NC)(R) was calculated
by a cluster relaxation model. Three-dimensional atomic clusters were
produced by the Reverse Monte Carlo method. These clusters were analyz
ed in terms of trigonal prismatic arrangements as a structural unit. I
n amorphous Ti75Si25 and Ti87Si13 those Si-atoms which are surrounded
by 9 Ti-atoms in the first coordination shell prefer trigonal prismati
c arrangements. In the atomic clusters of amorphous Ti59Si41, Ti49Si51
, and Ti40Si60, however, no preference of trigonal prisms was found.