Orientation control of KNbO3 film grown on glass substrates by Ca2Nb3O10- nanosheets seed layer

被引：7

作者：

Baudouin, F. ^{[1
]}

Demange, V. ^{[1
,2
]}

Ollivier, S. ^{[1
]}

Rault, L. ^{[2
]}

Brito, A. S. ^{[3
]}

Maia, A. S. ^{[3
]}

Gouttefangeas, F. ^{[2
]}

Bouquet, V. ^{[1
]}

Deputier, S. ^{[1
]}

Berini, B. ^{[4
]}

Fouchet, A. ^{[5
]}

Guilloux-Viry, M. ^{[1
,2
]}

机构：

[1] Univ Rennes, CNRS, UMR 6226, ISCR, 263 Ave Gen Leclerc, F-35042 Rennes, France

[2] Univ Rennes, CNRS, UMS 2001, ScanMAT, 263 Ave Gen Leclerc, F-35042 Rennes, France

[3] Univ Fed Paraiba, Lab NPE LACOM, BR-58051900 Joao Pessoa, Paraiba, Brazil

[4] Univ Paris Saclay, Univ Versailles St Quentin Yvelines, Grp Etud Matiere Condensee GEMaC, CNRS, 45 Ave Etats Unis, F-78035 Versailles, France

[5] NORMANDIE UNIV, ENSICAEN, UNICAEN, CNRS,CRISMAT, 6 Blvd Marechal Juin, F-14050 Caen, France

来源：

THIN SOLID FILMS | 2020年 / 693卷

关键词：

Inorganic nanosheets; Thin films; Langmuir-Blodgett; Pulsed laser deposition; Transmission electron microscopy; ORIENTED GROWTH; THIN-FILMS; PEROVSKITE; OXIDE; NIOBATE; INTERCALATION; EXFOLIATION; DIFFRACTION;

D O I：

10.1016/j.tsf.2019.137682

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

KNbO3 films have been deposited by pulsed laser deposition on glass substrates covered by Ca2Nb3O10- nanosheets used as seed layer, for the purpose of promoting (001) preferential orientation. Nanosheets have been prepared by the exfoliation process of HCa2Nb3O10 phase that is obtained by cation exchange of the Dion-Jacobson KCa2Nb3O10 phase in an acidic solution. Electron diffraction in transmission electron microscopy performed on KCa2Nb3O10 and HCa2Nb3O10 powders, and on Ca2Nb3O10- nanosheets revealed formation of local superstructures that are not detected by X-ray diffraction due to the weakness of superstructure reflection intensities. Nanosheets were deposited on substrates using the Langmuir-Blodgett method. A smooth covering of the surface was shown by atomic force microscopy. 200 nm thick KNbO3 films have been grown by pulsed laser deposition on Ca2Nb3O10--NS/glass and on (001)SrTiO3 substrates for comparison. Substrates covered with nanosheets induced highly textured (001)-oriented thin film, which possesses a similar microstructure as epitaxial film on single crystalline strontium titanate substrate.

引用

页数：6

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