Programme

P.17 -- Poster, VCTP-46

Date: Tuesday, 5 October 2021

Time: 08:30 - 10:00

Influence of temperature on the lattice constant of SrTiO3 perovskite by the statistical moment method with improved interatomic potential.

Cao Huy Phuong (1,2), Vu Van Hung (3)

(1) VNU University of Science, Hanoi, Vietnam; (2) Hung Vuong University, Phu Tho province, Vietnam; (3) VNU University of Education, Hanoi, Vietnam.

Temperature dependence of lattice constant of cubic Strontium titanate has been investigated using the statistical moment method. The lattice constant at various temperatures is derived in closed analytic form by including explicitly the anharmonic effects of the lattice vibrations. The potential with the partial charge model and Morse function is used, it allows modeling and calculating the numerical lattice constant at high temperature by the statistical moment method in good and reasonable agreement with the other theories and the experimental data.

Presenter: Cao Huy Phương