Ferroelectric and structural instability of (Pb,Ca)TiO3 thin films prepared in an oxygen atmosphere and deposited on LSCO thin films which act as a buffer layer

Pontes, D. S. L.; Pereira-da-Silva, Marcelo A.; Zampieri, Marcelo; Chiquito, A. J.; Pizani, P. S.; Longo, Elson

doi:10.1016/j.ceramint.2013.08.063

Cited by 6 publications

(4 citation statements)

References 38 publications

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“…3 shows the ε r -E curves of the NBTZn x (x ¼ 0.005-0.04) thin films. All the curves exhibit nonlinear and typical butterfly shaped loop with two peaks, which is due to the switching of the domain of ferroelectric material [16]. Obviously, all the centers of curves are not located at zero electric field, suggesting internal fields occur in the films.…”

Section: Resultsmentioning

confidence: 98%

The crystallization and dielectric tunability of Zn doped Na0.5Bi0.5TiO3 thin films

Qian

Yang

Han

et al. 2016

Ceramics International

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Section: Resultsmentioning

confidence: 98%

The crystallization and dielectric tunability of Zn doped Na0.5Bi0.5TiO3 thin films

Qian

Yang

Han

et al. 2016

Ceramics International

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“…Recently, several groups published studies on the relationship between electrical behavior and phase and crystallographic orientation by the introduction of buffer layers such as SrRuO3, LaNiO3, SrTiO3, (La,Sr)MnO3, (La,Sr)CoO3 as an effective method to improve properties of thin films [13,14]. The significant impact of SrTiO3 [13] or (La,Sr)CoO3 [14] acting as buffer layers on structural, microstructural and ferroelectric properties for (Bi,Nd)4Ti3O12 or (Pb,Ca)TiO3 thin films was clearly revealed. By using PbTiO3 and (Pb0.72La0.28)TiO3 or Pb(Zr0.52Ti0.48)O3 (PZT) interlayer it was possible to control the PZT film orientation [15,16].…”

Section: Introductionmentioning

confidence: 99%

Polymorphs of Neodymium Niobate and Tantalate Thin Films Prepared by Sol-Gel Method

Bruncková

Medvecký

Múdra

et al. 2019

Powder Metallurgy Progress

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Neodymium niobate NdNbO4 (NNO) and tantalate NdTaO4 (NTO) thin films (~100 nm) were prepared by sol-gel/spin-coating process on Pb(Zr0.52Ti0.48)O3/Al2O3 substrates with annealing at 1000°C. The precursors of films were synthesized using Nb or Ta tartrate complexes. The XRD results of NNO and NTO films confirmed tetragonal T-NdNbO4 and T-NdTaO4 phases, respectively, with traces of monoclinic MNdNbO4 and M´-NdTaO4. The surface morphology and topography were investigated by SEM and AFM analysis. NTO was smoother with roughness 5.24 nm in comparison with NNO (6.95 nm). In the microstructure of NNO, small spherical (~ 20-50 nm) T-NdNbO4 and larger needle-like particles (~100 nm) of M-NdNbO4 phase were observed. The compact clusters composed of fine spherical T-NdTaO4 particles (~ 50 nm) and cuboidal M´-NdTaO4 particles (~ 100 nm) were found in NTO. The results of this work can contribute to formation of different polymorphs of films for the application in environmental electrolytic thin film devices.

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“…The significant impact of SrTiO 3 [14] or (La,Sr)CoO 3 [15] acting as buffer layers on structural, microstructural and ferroelectric properties for (Bi,Nd) 4 [20]. Monoclinic ZrO 2 phase forms as a result of PbO loss at the sample surface (PbO melts at 880°C).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, several groups published studies on the relationship between electrical behavior and phase and crystallographic orientation by the introduction of buffer layers such as SrRuO 3 , LaNiO 3 , SrTiO 3 , (La,Sr)MnO 3 , (La,Sr)CoO 3 is effective method to improve properties of thin films [14,15]. The significant impact of SrTiO 3 [14] or (La,Sr)CoO 3 [15] acting as buffer layers on structural, microstructural and ferroelectric properties for (Bi,Nd) 4 [20].…”

Section: Introductionmentioning

confidence: 99%

Phase Composition of Samarium Niobate and Tantalate Thin Films Prepared by Sol-Gel Method

Bruncková

Medvecký

Múdra

et al. 2017

Powder Metallurgy Progress

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INTRODUCTIONRecently, the lanthanide (Ln = La, Nd, Sm, Eu and Gd) orthoniobates LnNbO 4 (LnNO) and orthotantalates LnTaO 4 (LnTO) materials have been developed for wide applications in satellite communication systems [1]. Samarium niobate SmNbO 4 (SNO) and tantalate SmTaO 4 (STO) films can be used as phosphors for solid-state lighting, as photocatalysts in solid-state laser materials and as ion conductors for solid oxide fuel cells. Samarium niobate (SmNbO 4 ) and tantalate (SmTaO 4 ) with fergusonite structure have attracted a great deal of attention due to their interesting physical properties, such as high dielectric constants, electro-optical, photoelastic, photocatalytic and luminescent properties as well as good mechanical and chemical stability. For SNO, there are two crystalline forms, the low temperature M-phase isostructural with monoclinic form of the fergusonite and the high temperature T-phase corresponding to tetragonal scheelite. The transition between two phases occurs reversibly in the range 500-800°C [2]. STO crystallizes in monoclinic form, besides its ability to possess two fergusonite-type structures, first known as M-type (I2/a) and second called M´-type (P2/a) [1,2].

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Ferroelectric and structural instability of (Pb,Ca)TiO3 thin films prepared in an oxygen atmosphere and deposited on LSCO thin films which act as a buffer layer

Cited by 6 publications

References 38 publications

The crystallization and dielectric tunability of Zn doped Na0.5Bi0.5TiO3 thin films

The crystallization and dielectric tunability of Zn doped Na0.5Bi0.5TiO3 thin films

Polymorphs of Neodymium Niobate and Tantalate Thin Films Prepared by Sol-Gel Method

Phase Composition of Samarium Niobate and Tantalate Thin Films Prepared by Sol-Gel Method

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