Ruhiyuddin Mohd Zaki

Preferred name

Ruhiyuddin Mohd Zaki

Official Name

Ruhiyuddin, Mohd Zaki

Alternative Name

Ruhiyuddin, M. Z.

Mohd Zaki, Ruhiyuddin

Zaki, Ruhiyuddin Mohd

Ruhiyuddin, Mohd Zaki

Zaki, R. Mohd

Mohd Zaki, R. S.R.

Zaki, R. M.

Main Affiliation

Universiti Malaysia Perlis

Scopus Author ID

55560602300

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DFT Study of Thermoelectric Performance of SrTiO₃ Doped by Tantalum

(Universiti Malaysia Perlis (UniMAP), 2019-10)
Akeem Adekunle Adewale
;
Abdullah Chik
;
Ruhiyuddin Mohd Zaki
;
Faizul Che Pa
;
Yeoh Cheow Keat
;
Noorina Hidayu Jamil

This paper deals with enhancement of thermoelectric performance of SrTiO₃ - a perovskite-based material by doping Ti-site with Ta. The electronic and the thermoelectric transport properties of doped SrTiO₃ were studied using the first principle calculation in full-potential of density functional theory. Spin-orbit coupling including Hubbard U parameter influences were observed in the investigation. Energy band structure and electron density of state were determined for electronic properties. The Seebeck coefficients, thermal conductivity, electrical conductivity as well as thermoelectric efficiency ZT were calculated for thermoelectric properties. The results of our calculations revealed that narrowing the bandgap of the material leads to the increase of thermoelectric efficiency ZT. At spin-orbit coupling with DFT+U method, ZT of 0.18 at 750 K were obtained and this is similar to the experimental data reported.

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