Regensburg 2019 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 44: Poster Tuesday: Spins and Magnetism

O 44.7: Poster

Dienstag, 2. April 2019, 18:00–20:00, Poster D

DFT calculation and experimental study on structural, optical and magnetic properties of Co-doped SrTiO3 — •Pornsawan Sikam1, Pairot Moontragoon1,2,3,4, Chayanin Sararat1, Attaphol Karaphun1, Ekaphan Swatsitang1,2,3, Supree Pinitsoontorn1,2,3, and Prasit Thongbai1,2,31Department of Physics, Khon Kaen University, Khon Kaen, 40002, Thailand — 2Integrated Nanotechnology Research Center (INRC), Department of Physics, Khon Kaen University, Khon Kaen, 40002, Thailand — 3Nanotec-KKU Center of Excellence on Advanced Nanomaterials for Energy Production and Storage, Khon Kaen University, Khon Kaen, 40002, Thailand — 4Thailand Center of Excellence in Physics, Commission on Higher Education, Bangkok, 10400, Thailand

Outstanding features of SrTiO3 are thermal stability and photocorrosion resistance so the SrTiO3 is widely studied to apply as photocatalyst. However, for further applications, this work would like to study Co doping on the SrTiO3. It is questioned up whether d-orbital of Co could induce magnetism in the non-magnetic SrTiO3 or not because magnetism could improve applications of the SrTiO3. Here, the Co-doped SrTiO3 is studied both experimental and theoretical aspects. In experiment, the Co-doped SrTiO3 is prepared by hydrothermal method. From the experiment, it is seen that Co can improve not only magnetic and optical properties but also surface area of the SrTiO3. These observed results are corresponding to the DFT study. Therefore, it is possible that Co-doped STO might be a potential candidate to be a great photocatalyst and the diluted magnetic semiconductor.

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