Tornike Gagnidze

Academic Doctor of Science

Vladimer Chavchanidze Institute of Cybernetics of the Georgian Technical University

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Thermodynamic analysis of defect formation in BiFeO3Tamar Tchelidze, Tornike Gagnidze and Alexander ShengelayaarticlePhys. Status Solidi CScopus, Google Scholar https://doi.org/10.1002/pssc.201400153EnglishState Targeted Program
Direct-epitaxial growth of SrAl2O4:Eu,Dy thin films on Al2O3 substrate by pulsed laser depositionH. Ma, T. Gagnidze, B. Walfort, M. Rossell, C. Cancellieri, I. Shorubalko and F. La MattinaarticleAppl. Surf. Sci. Scopus, Google Scholar https://doi.org/10.1016/j.apsusc.2019.06.098EnglishGrant Project
Structural properties of ultra-thin SrO film deposited on SrTiO3T. Gagnidze, H. Ma, C. Cancellieri, G-L. Bona and F. La MattinaarticleSci. Tech. Adv. MaterScopus, Google Scholar https://doi.org/10.1080/14686996.2019.1599693EnglishState Targeted Program

International Workshop on Oxide Electronicsლე დიაბლარე, შვეიცარია2018 poster

The role of epitaxial strain and chemical termination in selected interfaces of perovskite oxide heterostructures is under intensive investigation because of emerging novel electronic properties. SrTiO 3 (STO) is one of the most used substrates for these compounds, and along its <001> direction allows for two nonpolar chemical terminations: TiO2 and SrO. In this paper, we investigate the surface morphology and crystal structure of SrO epitaxial ultrathin films: from 1 to about 25 layers grown onto TiO 2-terminated STO substrates. X-ray diffraction and transmission electron microscopy analysis reveal that SrO grows along its [111] direction with a 4% out-of-plane elongation. This large strain may underlay the mechanism of the formation of self-organized pattern of stripes that we observed in the initial growth. We found that the distance between the TiO 2 plane and the first deposited SrO layer is 0.27(3) nm, a value which is about 40% bigger than in the STO bulk. We demonstrate that a single SrO-deposited layer has a different morphology compared to an ideal atomically flat chemical termination.

https://www.tandfonline.com/doi/full/10.1080/14686996.2019.1599693?scroll=top&needAccess=true

Doctoral Thesis Referee

Master Theses Supervisor

Doctoral Thesis Supervisor/Co-supervisor

Scientific editor of monographs in foreign languages

Scientific editor of a monograph in Georgian

Editor-in-Chief of a peer-reviewed or professional journal / proceedings

Review of a scientific professional journal / proceedings

Member of the editorial board of a peer-reviewed scientific or professional journal / proceedings

Participation in a project / grant funded by an international organization

Participation in a project / grant funded from the state budget

Patent authorship

Membership of the Georgian National Academy of Science or Georgian Academy of Agricultural Sciences

Membership of an international professional organization

Membership of the Conference Organizing / Program Committee

National Award / Sectoral Award, Order, Medal, etc.

Honorary title

Monograph

Handbook

Research articles in high impact factor and local Scientific Journals

Publication in Scientific Conference Proceedings Indexed in Web of Science and Scopus