loading page

Structural Stability and Thermodynamic Properties of (Y2O3)n(n=1-15) Clusters Based on Density Functional Theory
  • +2
  • Xin Jiang,
  • Zhenming Zhang,
  • Diqiang Luo,
  • Jinglin You,
  • Chaobin Lai
Xin Jiang
JiangXi University of Science and Technology
Author Profile
Zhenming Zhang
JiangXi University of Science and Technology
Author Profile
Diqiang Luo
JiangXi University of Science and Technology
Author Profile
Jinglin You
Shanghai University
Author Profile
Chaobin Lai
JiangXi University of Science and Technology
Author Profile

Abstract

The initial configuration of Yttrium oxide clusters (Y2O3)n(n=1-15) was creatively constructed by combining artificial bee colony algorithm with density functional theory. The structures of large and medium-sized yttrium oxide clusters with molecular number greater than 10 were established for the first time, and many new structures that are different from existing research have been obtained. The average binding energy, second-order difference energy, HOMO-LUMO gap, density of states and other properties of the clusters were analyzed. The thermodynamic properties and behavior of nano yttrium oxide clusters at different temperatures and sizes were discussed. Studies have shown that for small-sized clusters, the atomic stacking structure is cage-like, while for medium-sized and large-sized clusters, the composite trapezoidal structure and ellipsoid-like structure are more stable. The nanoclusters tend to be stable as a whole, and the relative stability of the cluster structure is higher when n = 2,4,7,9. The effect of yttrium oxygen atomic orbital on bonding is analyzed. The heat capacity (Cp), enthalpy change (H) and entropy (S) of (Y2O3)n (n=1-15) clusters increase with the increase of temperature (T), and the vibration free energy (Gv) decreases with the increase of T. The stability of the clusters changes in the temperature range of 300K-500K.

Peer review status:ACCEPTED

14 May 2021Submitted to International Journal of Quantum Chemistry
15 May 2021Submission Checks Completed
15 May 2021Assigned to Editor
25 May 2021Reviewer(s) Assigned
20 Jul 2021Review(s) Completed, Editorial Evaluation Pending
20 Jul 2021Editorial Decision: Revise Minor
22 Jul 20211st Revision Received
24 Jul 2021Submission Checks Completed
24 Jul 2021Assigned to Editor
27 Jul 2021Reviewer(s) Assigned
02 Aug 2021Review(s) Completed, Editorial Evaluation Pending
02 Aug 2021Editorial Decision: Accept