|Title:||Oxygen Pressure Inﬂuence on Properties of Nanocrystalline LiNbO3 Films Grown by Laser Ablation|
Golosov, D. A.
Zavadski, S. M.
Miakonkikh, A. V.
Rudenko, K. V.
Dostanko, A. P.
Ageev, O. A.
|Keywords:||публикации ученых;pulsed laser deposition;lithium niobate;thin ﬁlms;lead-free energy conversion devices|
|Citation:||Oxygen Pressure Inﬂuence on Properties of Nanocrystalline LiNbO3 Films Grown by Laser Ablation / Z. Vakulov [et. al.] // Nanomaterials. – 2020. – Vol. 10, № 7. –13. p. – DOI: 10.3390/nano10071371.|
|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 complicatestheirintegrationwithmicro-andnanoelectronictechnology. Thispaperreportstheeﬀect 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 pressureof1×10−2 Torr. Atlowresidualpressure(1×10−5 Torr),alackofoxygenintheformedﬁlms leadstotheformationofniobiumoxide(Nb2O5)clusters. Thepresentedtheoreticalandexperimental results provide an enhanced understanding of the nanocrystalline LiNbO3 ﬁlms growth with target parameters using pulsed laser deposition for the implementation of piezoelectric and photoelectric energy converters.|
|Appears in Collections:||Публикации в зарубежных изданиях|
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