Oxygen Pressure Influence on Properties of Nanocrystalline LiNbO3 Films Grown by Laser Ablation

Nanomaterials
Zakhar VakulovOleg A Ageev

Abstract

Energy conversion devices draw much attention due to their effective usage of energy and resulting decrease in CO2 emissions, which slows down the global warming processes. Fabrication of energy conversion devices based on ferroelectric and piezoelectric lead-free films is complicated due to the difficulties associated with insufficient elaboration of growth methods. Most ferroelectric and piezoelectric materials (LiNbO3, BaTiO3, etc.) are multi-component oxides, which significantly complicates their integration with micro- and nanoelectronic technology. This paper reports the effect of the oxygen pressure on the properties of nanocrystalline lithium niobate (LiNbO3) films grown by pulsed laser deposition on SiO2/Si structures. We theoretically investigated the mechanisms of LiNbO3 dissociation at various oxygen pressures. The results of x-ray photoelectron spectroscopy study have shown that conditions for the formation of LiNbO3 films are created only at an oxygen pressure of 1 × 10-2 Torr. At low residual pressure (1 × 10-5 Torr), a lack of oxygen in the formed films leads to the formation of niobium oxide (Nb2O5) clusters. The presented theoretical and experimental results provide an enhanced understanding of the nanocrystal...Continue Reading

References

May 1, 1990·Physical Review. B, Condensed Matter·R K Singh, J Narayan
Nov 19, 2003·Reproduction, Nutrition, Development·David BravoFrançois Meschy
Apr 1, 2015·Advanced Materials·Chang Kyu JeongKeon Jae Lee
Feb 13, 2018·ChemistryOpen·Ruo-Can Qian, Yi-Tao Long
Apr 17, 2019·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Joao V VidalAndrei L Kholkin
May 6, 2019·Optics Express·Dominik BrüskeDetlef Kip

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Citations

Sep 13, 2020·Materials·Zakhar VakulovOleg A Ageev
Jan 2, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Roman V TominovOleg A Ageev

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