SAIP2017

Density functional theory study of Ti _n (n = 2-32) clusters: Lowest energy configurations and electronic properties.

4 Jul 2017, 17:10

1h 50m

3rd and 4th floor passages (Engineering Building 51)

Board: 23

Poster Presentation Track A - Division for Physics of Condensed Matter and Materials Poster Session 1

Speaker

Mr Tshegofatso Michael Phaahla (University of Limpopo)

Description

The geometrical structures and electronic properties of transition metal clusters have been extensively studied during the past decades. However, theoretical investigations on titanium metal clusters have not been carried out systematically up to the larger clusters. In this study, density function theory (DFT) calculations have been performed to investigate the lowest energy structures and electronic properties of Ti_n (n = 2-32) clusters using PBE-Sol spin-unpolarized exchange correlation functional. Most of the previous studies revealed the distorted icosahedral and pentagonal bipyramid geometry as the most stable clusters among the other clusters. Nevertheless, this study predicted that Ti clusters follow the pentagonal behaviour. Triangular bi-pyramid Ti₅ with (D_3h) symmetry and pentagonal bi-pyramid Ti₇ with (D_5h) symmetry were found to be the most stable clusters compared to their neighbours.

Apply to be<br> considered for a student <br> &nbsp; award (Yes / No)?

Yes

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?

Yes

Level for award<br>&nbsp;(Hons, MSc, <br> &nbsp; PhD, N/A)?

MSc

Main supervisor (name and email)<br>and his / her institution

Prof H. R Chauke
Hr.Chauke@ul.ac.za
University of Limpopo